rate of change m = -2
Step-by-step explanation:
the rate of change is the slope of the line
to find the slope m use the equation m = (y2-y1)/(x2-x1)
pick two point in the line such as
(x1,y1) = (0,1)
(x2,y2) = (-1,3)
m = (y2-y1)/(x2-x1) = (3-1) / (-1- 0) = 2 / -1 = -2