Answer:
rise y_2 - y_1
m = --------- = -----------------
run x_2 - x_1
Step-by-step explanation:
m = slope
(x_1, y_1) = coordinates of first point in the line
(x_2, y_2) = coordinates of second point in the line
Slope formula can be written as,
y2-y1/x2-x1 or Rise/run
