CPM Homework Help : CALC 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?