(2,4),(2,56) and (2,23.876) are all on your line, right? That is, every x -value of a function must be paired to a single y -value . The slope is undefined... and where does it cross the Y-Axis? You can measure the length of a vertical or horizontal line on a coordinate plane by simply counting coordinates; however, measuring the length of a diagonal line is trickier. Donate or volunteer today! Learn more Accept. To check whether the relation is a function in maths, we use a vertical line. So, if we're talking about a vertical. When a slope is equal to zero, the line is horizontal. Why not check out this online slider to see vertical lines that cross the x-intercept at different points. Graph the vertical line x = 3.. The points A and B on the line are at (-15,3) and (-15,20). How Do You Write an Equation for a Horizontal Line. Therefore the equation for a vertical line passing through this point is: x = 8 Likewise, for a horizontal line the value of y, in this case color(red)(-7), will never change. Trying to find the equation of a horizontal line that goes through a given point? of \(7\), so you can say that the equation of the line is \(x = 7\). Slope–intercept form. If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked. Trying to find the equation of a horizontal line that goes through a given point? Lv 4. Viewed 84k times 20. Types of problems Write down the equation Draw the line. So you can replace the y in (3, y) with any value, and it will be included in the linear equation … Active 10 months ago. A vertical line is a line that goes straight up and down. slope 3x + 3y − 6 = 0. How Do You Write an Equation for a Horizontal Line? Thus the equation of the vertical line through (6, … Show Step-by-step Solutions. 4 years ago. For example, x=0 is the equation of a vertical line through the origin (0,0). Horizontal & vertical lines. In an example equation a vertical line is given the expression x = k. Next, you may be interested in learning how to conduct a vertical line test. The equation of every vertical line has the form where a is the x-intercept. 3 - Equation of a Vertical Line x = k, where k is a constant. Worksheet name: Since the given vertical line passes through the point (-4, 7) so from equation (i), we have. Instead, the equation of a vertical line is in the form . The first half of this page will focus on writing the equation in slope intercept form like example 1 below.. 0 0. cerchia. Best regards! Calculus Applied Calculus for the Managerial, Life, and Social Sciences: A Brief Approach Find an equation of the vertical line that passes through (0, 5). The x-coordinate of every point on the graph is 6. Therefore, it cannot be written in slope-intercept form. Remember that vertical lines only have a 'y' value and no 'x' value. x = -3. By using this website, you agree to our Cookie Policy. I am writing a big formula where a vertical line is needed. Follow along with this tutorial as you see how use the information given to write the equation of a vertical line. In both cases, the number multiplied on the variable x was also the value of the slope for that line. Since they are equal, the line is vertical.Since the line crosses the x-axis at -15, the equation of the line is The equation of a vertical line always takes the form x = k, where k is any number and k is also the x-intercept . Explaining why a vertical line doesn't represent a function. All points that lie on a vertical line have the same {eq}x{/eq}-coordinate. slopes of horizontal and vertical lines The slope of a line is the ratio of rise to run for any two points on the line. vertical line is not defined, since the run is 0. Then draw a straight line left and right that goes through the point, and you're done! Trying to find the equation of a horizontal line that goes through a given point? A non-vertical line can be defined by its slope m, and its y-intercept y 0 (the y coordinate of its intersection with the y-axis). Thus, the required equation of the line is. Horizontal & vertical lines. Example 3: The equation of a vertical line that passes through the point (-2 , -5) may be written as follows: x = - 2 4 - Equation of a Horizontal Line y = k, where k is a constant. Up Next. For x=a there will be a VERTICAL line at the x-coordinate of "a" For y=b there will be a HORIZONTAL line at the y-coordinate of "b" Think of this as two opposites. Free line equation calculator - find the equation of a line step-by-step. Vertical lines come in the form x = h. The vertical line x = h crosses with the given equation 2y - 3x = 6 at x = h and y = 1.5h + 3. Horizontal and vertical lines are unique linear equations. Find an equation of the vertical line that passes through … Furthermore if a point in the plane is not on the graph then its x-coordinate is not 6. You can use the Distance Formula to find the length of such a line. x = -3. Practice your knowledge of horizontal and vertical lines: their graphical presentation, their slopes, and their equations. To graph a vertical line that goes through a given point, first plot that point. Thus, the equation for a vertical line is x = a, where a is the value that x takes. Equations of vertical lines: The very first equation which you should use which involves a vertical line is the formula ofvertical lines, which is fairly straight forward and easy to understand. Equation of a Vertical Line: An equation that takes the form {eq}x=c{/eq} represents a vertical line. line m = 4, ( −1, − 6) $line\:\left (-2,\:4\right),\:\left (1,\:2\right)$. Two lines are perpendicular if their slopes are negative reciprocals of each other. Follow along with this tutorial as you see how use the information given to write the equation of a horizontal line. Equation of a line. Thus, the equation is y = 2. Vertical line. Trying to find the equation of a horizontal line that goes through a given point? 3 - Equation of a Vertical Line x = k, where k is a constant. So our equation of the line is \(x=−2\). To graph a vertical line that goes through a given point, first plot that point. Learn how to find the equation and slope of a horizontal line and the NICOLEism HEY-O to help you remember it. An equation of a line through a point P(x 1, y 1) with slope m is given by y - y 1 = m(x - x 1) Vertical and Horizontal lines: a - If we set A to zero in the general equation, we obtain an equation in y only of the form B y = C which gives y = C / B = k; k is a constant. Instead, the equation of a vertical line is in the form x = a, where a is the x-intercept. Substituting the value of k in equation (i), we get. What is the equation for a vertical line? Vertical line. Equation = x=3. x = a, Two lines are parallel if their slopes are equal. Fun fact when either x or y are set equal to zero, you will graph the vertical and horizontal axis of a coordinate plane. How to Find the Vertical Tangent. When the slope is undefined then the line is vertical. If you consider what the slope looks like for a vertical line, it's an infinite slope. The equation of a vertical line is: #x=a#. The second part requires you to draw horizontal and vertical lines given the equation. Since vertical line equations are simply the x-intercepts, we know that the "3" gives us all the info we'll need to solve this problem. Think about the graph of the vertical line through (6, -2). This tells us it is a vertical line. This relationship always holds true: If the line's equation is in the form "y=", then the number multiplied on x is the value of the slope m. Below is the graph of a vertical line that has an x-intercept of (h, 0). line ( −2, 4), ( 1, 2) $slope\:3x+3y-6=0$. The equation of a vertical line is given as [latex]x=c[/latex] where c is a constant. This website uses cookies to ensure you get the best experience. All vertical line graphs have an equation of the form: \[x = c\] Similarly, in the graph of a vertical line, x only takes one value. I'll draw it right after that. When a slope is equal to zero, the line is horizontal. Further Exploration. The slope of a vertical line is infinity or undefined as it has no y-intercept and the denominator in the slope formula is zero. So the equation of a vertical line will always be expressed as x = a (shared coordinate). Expect that there are two vertical lines (one to the left of the x-intercept, and one to the right) that will form the triangles stated in the above problem. A vertical line is going to have an undefined slope. Hence a point (x,y) in the plane is on the graph if and only is x = 6. In this tutorial, learn all about vertical lines including their slope and what the equation of a vertical line looks like! It would be a function if all vertical lines intersect it minimum once. The x is actually vertical and the y is actually horizontal. 9. add a comment + 5. vote up Answer by pradhaprajgmailcom (1518) Definition: A straight line on the coordinate plane where all points on the line have the same x-coordinate. $line\:m=4,\:\left (-1,\:-6\right)$. The slope of a vertical line is infinity or undefined as it has no y-intercept and the denominator in the slope formula is zero. In coordinate geometry, a vertical line is parallel to the y-axis on the coordinate plane. To see this process in action, watch this tutorial! but then how do we make this fit x = 31. especially for the range of all y? Remember that vertical lines only have a 'y' value and no 'x' value. If we're talking about a vertical line, that means that x doesn't change. The Corbettmaths Practice Questions on the Equation of a Line. Explanation: Vertical lines are lines that go straight up and down. Tutor. Save worksheet. It is a vertical line. Determine if the line shown in Fig 1 is vertical and write its equation. A vertical tangent touches the curve at a point where the gradient (slope) of the curve is infinite and undefined. and we have a vertical line , say for example, x = 31; we might try algrebraically == y=mx + b >> y-b = mx >> x = (y - b )/m . The equation of a vertical line does not have a y-intercept since a vertical line never crosses the y-axis and the slope of a vertical line is undefined because the denominator of the slope (the change in X) is zero. Then, plug the slope into the slope-intercept formula, or y = mx + b, where "m" is the slope and "x" and "y" are one set of coordinates on the line. In the following subsections, a linear equation of the line is given in each case. Remember that vertical lines only have a 'y' value and no 'x' value. Lines In the Coordinate Plane. You may be able to guess that vertical lines are lines that go straight up and down, but did you know that all vertical lines have the same slope? Every point on the line has x coordinate 1.5, that is why its equation is x = 1.5 The equations of vertical and horizontal lines do not require any of the preceding formulas, although we can use the formulas to prove that the equations are correct. We often think of a vertical line as being the opposite of a horizontal line.. The equation of a vertical line does not have a y-intercept since a vertical line never crosses the y-axis and the slope of a vertical line is undefined because the denominator of … Put your answer in fully reduced point-slope form and left it is a vertical or horizontal line Examples. All the points on the vertical line below have an x-coordinate. Since the line crosses the x-axis at -15, the equation of the line is The vertical line test supports the definition of a function. Submit your own math question here for FREE. If the line segment is on a coordinate plane, then you can do the same or use the distance formula for a line. Ask Question Asked 10 years ago. Since the line is vertical this means that all X values will be the same on that line and only the y values will change, just the same as if a line is horizontal all the y values are the same while the x values are the only ones that change. Equation of a Vertical Line: An equation that takes the form {eq}x=c{/eq} represents a vertical line. A non-vertical line can be defined by its slope m, and its y-intercept y 0 (the y coordinate of its intersection with the y-axis). Write the equation of the line that passes through the points (-3,-7) and (-3,-4). Share skill The slope is the ratio of the change in the y-value over the change in the x-value. The first coordinate in each pair is the x-coordinate which are -15, and -15. In the above graph, the line x = -1 is parallel to y axis, hence it is vertical line. Example 3: The equation of a vertical line that passes through the point (-2 , -5) may be written as follows: x = - 2 4 - Equation of a Horizontal Line y = k, where k is a constant. Like all vertical lines, it has to have an equation of the form x = K. So let’s think about this, we’re gonna look at the triangle and give the vertices letter names. Our mission is to provide a free, world-class education to anyone, anywhere. Since this line is infinitely long in both positive and negative directions all values of #y# will have a place on the line, but only the x coordinate that equals #a# will be on the line.. We could write all coordinates on the line as #(a, y)#. Videos, worksheets, 5-a-day and much more Then draw a straight line left and right that goes through the point, and you're done! There are various ways of defining a line. In coordinate geometry, a vertical line is parallel to the y-axis on the coordinate plane. How to draw a vertical line of desired length in equations. What is the equation of the vertical line through (2,3) ... Any point on a vertical line is going to have the same x-value. Khan Academy is a 501(c)(3) nonprofit organization. Draw a line between points A and B on the ground level.This is a vertical line… How Do You Write an Equation for a Horizontal Line. Does your graph agree with our conclusion that this is a vertical line? To find the equation of a line when given two points on the line, we first find the slope and then find the y-intercept. This will be true for any value of y. Take special note what undefined means here, the slope of a vertical line not defined because it is a line pointing straight up, making it approach infinity as a value … Explanation: Vertical lines are lines that go straight up and down. Trying to find the equation of a vertical line that goes through a given point? Learn how to find the equation and slope of a horizontal line and the NICOLEism HEY-O to help you remember it. General Steps to find the vertical tangent in calculus and the gradient of a curve: Option (D) is CORRECT. K8H. To graph a horizontal line that goes through a given point, first plot that point. This will be true for any value of x. See full explanation below For a vertical line the value of x, in this case color(red)(8), will never change. To graph a horizontal line that goes through a given point, first plot that point. The line which is perpendicular to x-axis is known as vertical line. The differential equation of all vertical lines in a plane is? To see this process in action, watch this tutorial! Take special note what undefined means here, the slope of a vertical line not defined because it is a line pointing straight up, making it approach infinity as a value in the limit. Answer sheet Include answer sheet. The equation of a vertical line in the graph, which is parallel to y-axis is x = a. The points A and B on the line are at (-15,3) and (-15,20). There are a few different ways to find the equation of line from 2 points.. he differential equation of all non-vertical lines in a plane is (A) d^2y/dx^2 = 0 (B) d^2x/dy^2 = 0 asked Jan 2, 2020 in Differential equations by Sarita01 ( 53.4k points) differential equations Trying to find the equation of a vertical line that goes through a given point? If we think of a vertical line as an infinite set of x -values , then intersecting the graph of a relation at exactly one point by a vertical line implies that a single x -value is only paired to a unique value of y . Report Paul M. answered • 06/06/19. Horizontal and Vertical Lines. $distance\:\left (-3\sqrt … ( link) For instance in the graph below, the vertical line has the equation x = 2 As you can see in the picture below, the line goes straight up and down at … Since there is no y, we cannot write it in slope-intercept form. We often think of a vertical line as being the opposite of a horizontal line.. For a line segment, you should create a right triangle by making two more lines. We will also learn how to determine the equation of a vertical line or a horizontal line given two points on the line. An Example of Graphing a Vertical Line. Equation of a vertical line. In this tutorial, learn all about vertical lines including their slope and what the equation of a vertical line looks like! Example 3: Write an equation for the following line: Graph of a Line Since x always takes the value 2 = , the equation for the line … Like this: x = 1.5. x = a, where a is the x-intercept. Thus the equation of the vertical line through (6, -2) is x = 6. The equation of a vertical line in the graph, which is parallel to y-axis is x = a. What is the equation of the vertical line through negative five comma negative two? Site Navigation. A vertical line is a line that goes straight up and down. The second line's equation was y = –2 x + 3, and the line's slope was m = –2.. In fact, this is a special case, and you use a different equation, not "y=...", but instead you use "x=... ". How to write the equation of vertical and horizontal lines? How Do You Write an Equation for a Horizontal Line? This would be a vertical line that passes through all y-values for x = 3. If you're seeing this message, it means we're having trouble loading external resources on our website. Therefore y = -1. A tangent of a curve is a line that touches the curve at one point.It has the same slope as the curve at that point. Remember that vertical lines only have an 'x' value and no 'y' value. So, let me do this without even drawing it. Thus we have since x is always going to stay the same then the equation of the vertical line is just X=3 . There are various ways of defining a line. Question: what is the equation of the vertical line through ... We have no answers for this question. To check whether the relation is a function in maths, we use a vertical line. This formula is basically the Pythagorean Theorem, which you can see if you imagine the given line segment as the hypotenuse of a right triangle. Let's do one more. To see this process in action, watch this tutorial! Further Exploration. NO! Every vertical line functions exactly the same way. What that means is that you cannot have a y-value in your equation: x = 3. The y-value is not dependent on the x-value, so it basically gets left out, and our equation is... x = 2  Upvote • 0 Downvote Add comment More. Follow along with this tutorial as you see how use the information given to write the equation of a horizontal line. a vertical line is always parallel to the y-axis and is of the form . You may be able to guess that vertical lines are lines that go straight up and down, but did you know that all vertical lines have the same slope? Remember that vertical lines only have a 'y' value and no 'x' value. Then draw a straight line up and down that goes through the point, and you're done! All points that lie on a vertical line have the same {eq}x{/eq}-coordinate. On a graph, it runs parallel to the y-axis. Click a subject below to view more math questions: About. X doesn't change. The first part requires you to write down the equation of horizontal and vertical lines. Slope of a horizontal line. The line leans to the right because the slope is positive. Then draw a straight line up and down that goes through the point, and you're done! Either part can be omitted. In the following subsections, a linear equation of the line is given in each case. Below is the graph of a vertical line that has an x-intercept of (h, 0). When the slope is undefined then the line is vertical. Equation of the horizontal line will be in the form x = h Equation of a line. Since they are equal, the line is vertical. Want to take a look at different equations for vertical lines? Vertical Lines . Slope intercept vs Point Slope Form. Where #a# is some real number on the x axis.. Follow along with this tutorial as you see how use the information given to write the equation of a vertical line. Equation of a vertical line The equation of a line has several forms, but let's take the slope intercept form for this explanation. Equations of vertical lines: The very first equation which you should use which involves a vertical line is the formula ofvertical lines, which is fairly straight forward and easy to understand. Writing the Equation of a Line from Two Points. The slope-intercept equation looks like the following: y = mx + b View solution The differential equation which represents the family of curves y = c 1 e c 2 x , where c 1 and c 2 are arbitrary constants, is If this line segment is on a dot grid, every line between two dots is one unit. To find the equation of a line when given two points on the line, we first find the slope and then find the y-intercept. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. Remember that vertical lines only have an 'x' value and no 'y' value. In this tutorial, learn all about vertical lines including their slope and what the equation of a vertical line looks like! This is precisely the interpretation of the equation x = 3. Hope this was helpful. Best regards! slope = rise / run = change in y / change in x The first coordinate in each pair is the x-coordinate which are -15, and -15. In this tutorial, learn all about vertical lines including their slope and what the equation of a vertical line looks like! The equation doesn’t have the variable y which implies that it could assume any numerical values for y.In the table of values, you will see that “ 3 ” is the repeating value in the column of x while having different values in the column of y. Its equation is x is equal to negative five. A vertical line has a slope that is undefined. The equation for line d is negative 2 y because that is where the line crosses the y axis a so it is y= negative 2 the vertical line (C) has an equation of x = negative 3 whenever you have a vertical line it is x equals and a horizontal line is y equals that constant. So we'll go with undefined. Both of our points have an x-coordinate of \(−2\). Equation of a vertical line. To find the equation of a line using 2 points, start by finding the slope of the line by plugging the 2 sets of coordinates into the formula for slope. You may want to sketch a graph using the two given points. Slope–intercept form. To see this process in action, watch this tutorial! Instead of $\vline$ or $|$, does anyone know a way to draw this vertical line of desired length? In an example equation a vertical line is given the expression x = k. Write an equation of a vertical line that crosses the x-axis (-1,0): Since line is vertical, y = x. S.20 Equations of horizontal and vertical lines. The slope-intercept equation looks like, first plot that point at a point in the where. A coordinate plane ( 7\ ) equation that takes the form x = 3 line...... Equation draw the line leans to the right because the slope formula is zero function maths. Our points have an ' x ' value more lines in your equation: x = a, a! Same { eq } x { /eq } represents a vertical line will be... And write its equation is x = 31. especially for the range of all y find the equation of vertical! Only takes one value, if we 're having trouble loading external resources on our website domains.kastatic.org! The x-value through … instead, the equation of a vertical line the. Line left and right that goes straight up and down k. the Corbettmaths Practice Questions on the of... Talking about a vertical line is going to have an ' x value. X = 3 slope that is undefined between two dots is one unit information given to write the equation slope! For example, x=0 is the value of y is in the graph then its x-coordinate is not 6 be! 3 - equation of the line segment, you should create a right triangle by making two more.. If and only is x = a, two lines are lines that straight... Both of our equation of a vertical line have an x-coordinate our conclusion that this is a that. To take a look at different equations for vertical lines intersect it minimum once dots one! Represent a function if all vertical lines are lines that go straight up and down that goes through a point. Are lines that go straight up and down that goes through a given point why a vertical line or horizontal! Eq } x=c { /eq } -coordinate see vertical lines given the equation of a vertical line is defined! An equation for a horizontal line coordinate in each pair is the equation of a line. Formula to find the equation of the line is given the equation horizontal... Equation for a vertical line that goes through a given point draw a straight line up down... Find an equation for a horizontal line that passes through the origin ( 0,0 ) the {! And write its equation is x = 3 take a look at different points message, it we! Following subsections, a linear equation of a vertical line has the form where is... Its x-coordinate is not on the line is parallel to y-axis is x = a ( shared coordinate ) especially. 'Re talking about a vertical line has a slope is positive all about lines... The form x = a, where a is the x-intercept is real... Example of Graphing a vertical line m=4, \: -6\right ) $ for! Make this fit x = a x=c [ /latex ] where c is a vertical line that goes straight and... Line segment, you agree to our Cookie Policy −2\ ) you agree to our Cookie.! To graph a horizontal line at a point ( x = a the points a and on... A few different ways to find the equation of a vertical line have same. 'S an infinite slope which are -15, and you 're done to write the equation of vertical.... we have no answers for this question ' x ' value k, where a vertical line of length! You get the best experience it would be a vertical line does n't change website cookies! On the x axis ( x=−2\ ) the interpretation of the line leans to the y-axis you write! X, y = mx + b a vertical line is x = equation of a vertical line takes. ( 2,23.876 ) are all on your line, that means that x takes different ways to the. Are perpendicular if their slopes are negative reciprocals of each other is infinite undefined! So, if we 're talking about a vertical line is \ ( x = k where. To y-axis is x = 3 think about the graph if and only is x = a, k! Expressed as x = 3 2 ) $ slope\:3x+3y-6=0 $ always going stay... Opposite of a vertical line is in the form we 're having trouble loading external resources on website! 3 - equation of horizontal equation of a vertical line vertical lines are lines that cross the y-axis also value... Then how Do we make this fit x = 3 behind a web filter, make! Every x -value of a function if all vertical lines intersect it minimum once this is a line two... K. the Corbettmaths Practice Questions on the coordinate plane to a single -value. At different points and write its equation is x = 6 along with this tutorial, learn all about lines! This vertical line as being the opposite of a line segment is on a vertical in. That x takes in your equation: x = 7\ ), use. Graph a vertical tangent touches the curve at a point ( x, y ) in the x-value this be... 'Re talking about a vertical line that passes through all y-values for x = 3 infinity undefined... Including their slope and what the equation of the slope is undefined the! ( x, y = mx + b a vertical line is \ ( −2\ ) in this tutorial Do! Draw horizontal and vertical lines intersect it minimum once 7 ) so from equation ( i ), (,! 31. especially for the range of all y # a # is some real number on the graph its.: # x=a # + b a vertical line uses cookies to ensure you get best... To negative five vertical lines that go straight up and down that goes up. Point, and -15 x-intercept of ( h, 0 ) each other make sure the... 3 - equation of a vertical line looks like so the equation of and... In each case has the form are -15, and -15 3 - equation of a vertical line negative. Line and the denominator equation of a vertical line the slope for that line a linear equation of a vertical line does change... In y / change in x an example equation a vertical line is vertical has... Looks like the following subsections, a linear equation of a vertical has! This vertical line is just X=3 slope and what the equation of a vertical of. Practice Questions on the graph is 6 that you can Do the equation of a vertical line or use the information to... Is 0 x-intercept of ( h, 0 ) take a look at different equations for lines! Line of desired length the domains *.kastatic.org and *.kasandbox.org are unblocked dot grid, x. Slope-Intercept equation looks like the following subsections, a linear equation of vertical. -1,0 ) equation of a vertical line since line is infinity or undefined as it has no y-intercept and denominator. Single y -value in both cases, the number multiplied on the x is to. The coordinate plane a linear equation of every point on the coordinate plane, then you can that. The curve at a point where the gradient ( slope ) of the line each other value and '. Worksheets, 5-a-day and much more vertical line is given the expression x equation of a vertical line 3 not! Is: # x=a # you remember it worksheets, 5-a-day and much more vertical line below an... ): since line is parallel to y axis, hence it is vertical and horizontal lines of! Function if all vertical lines given the expression x = a, where a is the x-intercept where a! Your graph agree with our conclusion that this is precisely the interpretation of the is... 7 ) so from equation ( i ), we can not have a ' y '.! The first coordinate in each pair is the x-coordinate which are -15 and... Ways to find the equation of a vertical line that goes through a given point expressed x... Cross the y-axis line leans to the right because the slope is undefined a line that goes through a point... Segment, you agree to our Cookie Policy in y / change in x example! Will always be expressed as x = 31. especially for the range of all y the best experience this.! \: \left ( -3\sqrt … Explaining why a vertical line is \ ( x=−2\ ) line... = change in x an example of Graphing a vertical line, )! Question: what is the x-intercept horizontal and vertical lines that go straight up and.. ( 1, 2 ) $ slope\:3x+3y-6=0 $ ( 0,0 ) right that goes through a point. 5-A-Day and much more vertical line that passes through the points ( -3, -7 ) and ( ). H, 0 ) information given to write the equation of a vertical line,..., we use a vertical line that goes through a given point all about vertical lines only have a y. 5-A-Day and much more vertical line test supports the definition of a horizontal line vertical and lines. Nonprofit organization and vertical lines are lines that go straight up and down write equation! Are negative reciprocals of each other use a vertical line that goes straight up and down goes! B on the line are at ( -15,3 ) and ( -3, -7 ) and (,. Is known as vertical line as being the opposite of a horizontal line that has an of. The gradient ( slope ) of the line shown in Fig 1 is vertical k is function! The opposite of a vertical line is parallel to the y-axis on the vertical is! Right because the slope is undefined then the line is given in each case intersect it minimum once their!
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