Question

Which is the best estimate for the average rate of change for the quadratic function graph on the interval 0 ≤ x ≤ 4?

Answer 1

The best estimate for the average rate of change is
`-2`

Explanation:

we know that

the average rate of change using the graph is equal to

`(f(b)-f(a))/(b-a)`

In this problem we have

`f(a)=f(0)=0`

`f(b)=f(4)=-8`

`a=0`

`b=4`

Substitute

`(-8-0)/(4-0)=-2`