Question

Let f(x)=x2+3x−4 .

What is the average rate of change for the quadratic function from x=−3 to x = 8?

Enter your answer in the box.

Answer 1

8

8

8

8

8

8

8

8

8

8

8

8

8

8

8

8

8

8

if you didn't understand, it is 8.

Answer 2

that is the slope from x=-3 to x=8

so
just do
(f(8)-f(-3))/(8-(-3))=(84-(-4))/(8+3)=(84+4)/(11)=88/11=8
average rate of change is 8