Answer:
-6
Step-by-step explanation:
Average rate of change over [-1, 2]
Average rate of change = [tex] \frac{f(b) - f(a)}{b - a} [/tex]
Where,
Where,
[tex] a = -1, f(a) = 8 [/tex]
[tex] b = 2, f(b) = -10 [/tex]
Plug in the values into the formula for average rate of change.
Average rate of change = [tex] \frac{-10 - 8}{2 - (-1)} [/tex]
= [tex] \frac{-18}{3} [/tex]
= -6
