Answer: - 3/2
Explanation:
The rate of change is the same as the slope.
To find the slope, find the change in the y coordinates of both point and divide it by the change in the x coordinates.
y coordinates: 2 and 8
x coordinates: 7 and 3
2 - 8 = -6
7 - 3 = 4
Slope : -6/4 = - 3/2