Question

F(x)=x^2+10 what is the average rate of change of f over the Interval [-2,-1]?

Answer 1

Answer: -3

Step-by-step explanation:

The average rate of change is $\frac{f(b)-f(a)}{b-a}$. All we have to do is to plug in our values.

a=-2

b=-1

f(b)=f(-1)=(-1)²+10=11

f(a)=f(-2)=(-2)²+10=14

With our values listed, all he have to do is to plug them in.

$\frac{11-14}{-1-(-2)} =\frac{-3}{1}=-3$