Answer:
slope = -5/8
Explanation:
Use the rise and the run from point C to point D to find the slope of the line.
C is at (7 , -2)
D is at (15 , -7)
slope = change in y / change in x
slope = (-2 - (-7)) / (7 - 15)
slope = (-2 + 7) / -8
slope = 5/-8
slope = -5/8