Using the graph below, calculate the average rate of change for f(x) from x = 2 to x = 6.
x = −4
x = −1
x = 1
x = 4

the average rate of change for f(x) from x = 2 to x = 6 = [f(6) - f(2)]/(6 - 2)
f(6) = 6
f(2) = 2

the average rate of change for f(x) from x = 2 to x = 6 = (6 - 2)/(6 - 2) = 4/4 = 1

The answer is b: step 2.