CPM Homework Help : CALC3RD Problem 1-132

For each graph below, state the intervals where the function is increasing and decreasing.

Hint (a):
For which values of $x$ is $y$ increasing, and for which values of $x$ is $y$ decreasing?
Answer (a):
Increases when $x<-3$ and $x>2$ ,
decreases when $-3<x<2.$

For part (a) on the interval in which the function is decreasing, is the rate of decrease constant? How do you know?
Hint (c):
Describe the shape of the graph where the function is decreasing? Is it curvy or linear? Is it steep or smooth or does it change?