Question

Calculate the slope of the line using two different pairs of points.

Answer 1

Rise/run = 20/20 = 1
m = 1

Answer 2

Ok find two points
(0,20) and (20,0)
Slope formula: (y2-y1)/(x2-x1)
(0-20)/(20-0) = -20/20 = -1
Solution: m = -1