First We have to selecto two points from the graph. We are going to use points
(2,1) and (0,-3). Then we are going to calculate the slope of the line
[tex]m=\frac{-3-1}{0-2}=\frac{-4}{-2}=2[/tex]
Since the y-intercept is -3 (from the graph) and the slope is 2, the equation must be.
y = 2x - 3
