Question

Find the average rate of change of
f(x)= 2x^2 - 9x
from
x=2 to x=6
.

Simplify your answer as much as possible.

Answer 1

@amistre64

Answer 2

Find what f(x) equals at x = 6 and x = 2. Subtract: f(6) - f(2).
Divide the difference by the difference in x values. Diff. of x values is: 6 -2 = 4.
What do you get after dividing?

Answer 3

so I'm dividing the difference between f(6) - f(2) by 4?

Answer 4

@Hari_Seldon