Learn how to write the slope formula from scratch and how to apply it to find the slope of a line from two points. Visit the Learning Center. Using Google products, like Google Docs, at work or school? Try powerful tips, tutorials, and templates. Learn to work on Office files without installing Office, create dynamic project plans and team calendars, auto-organize your inbox, and more. Slope of a line explained,videos,practice quizzes.The slope is a measure of how the line angles away from the horizontal.One can also think of slope as the Loading. Lines: Slope Intercept Form How to Find the Slope of a Line Using Two Points. Finding the slope of a line is an essential skill in coordinate geometry, and is often used to draw a line on graph, or to determine the x- and y-intercepts of a line. The slope of a line. x= 9 is a vertical line. The slope of any vertical line is undefined. You can prove this mathematically, as the line crosses every y point. Pick any values for y, and use 9 as the x value m= (2-1)/(9-9) = 1/0 = undefined Anything divided by 0 is undefined How do you find the slope of a line from a graph? Is the slope negative or positive? All your answers are here. Like. Share. Subscribe. Free Worksheet from K. Slope is often denoted by the letter m; there is no clear answer to the question why the letter m is used for slope, but its earliest use in English appears in O'Brien (1844) who wrote the equation of a straight line as y = mx + b and it can also be found in Todhunter (1888) who wrote it as y = mx + c. Graph a line that has a slope that is negative and greater than the slope of the blue line. So let's think for a second about what slope means. This video explains how to find the slope of a line.