Text Slope dfrac goldD text Change in y greenD text Change in x dfrac goldD y_2 - y_1 greenD x_2 - x_1 Slope Change in xChange in y. The slope of a line defines the steepness of the line and whether the line rises or falls. Slope Change in y Change in x y 2 y 1 x 2 x 1.
Those two points of a line in general will have coordinates x1y1 and x2y2 for points 1 and 2 respectively.
The x and y coordinates of the lines are used to calculate the slope of the lines. M Dy Dx vertical change horizontal cnahge yB yA xB xA m D y D x v e r t i c a l c h a n g e h o r i z o n t a l c n a h g e y B y A x B x A. Equation of a line The slope m of a line is one of the elements in the equation of a line when written in the slope and intercept form. To use this formula you need the coordinates of two different points on the line.