### Home > PCT > Chapter Ch9 > Lesson 9.1.2 > Problem 9-21

9-21.

Complete the following. Homework Help ✎

Find the average rate of change for the function

*a*(*x*) = 3*x*− 5 over the interval [2, 6].Repeat part (a) for the interval [5, 7].

Do you think it is true that

*a*(*x*) will have the same average rate of change over*any*interval? Why or why not?

Think about the graph of *y* = *a*(*x*).

What type of curve is it?