Follow along with this tutorial as you see how use the information given to write the equation of a vertical line. X a where a is the x-intercept. Slope of a line between two points.
Find the derivative of the function.
The slope of a line is change in Y change in X. Locate two points on the line whose coordinates are integers. The slope of a vertical line undefined. M y2y1 x2x1 m y 2 y 1 x 2 x 1.