Question

What is the average rate of change of y with respect to x over the interval [1, 5] for the function y = 4x + 2?

8
one fourth
2
4

Answer 1

y = 4x + 2

y(5) = 4(5) + 2 = 22
y(1) = 4(1) + 2 = 6

average rate of change = (22-6)/(5-1) = 16/4 = 4

answer
4