plzz help me out look at the pic

Answer:
(B) 10
Step-by-step explanation:
Rate of change is basically slope
So the slope here is 10/1 so the rate of change is 10
Answer:
(B) 10
Step-by-step explanation:
P1 = (4, 40)
P2 = (0, 0)
m = (y2 -y1) / (x2 - x1)
= 40/4
= 10