10 8
6+
4
2
1-10
-8-
-10
5. Where is the graph increasing?
6. Where is the graph decreasing?
7. Where is the graph constant?
8. Identify an intercept.

The change in water level of a lake is modeled by a polynomial function, w(x). described how to find the x-intercepts of w(x) and how to construct a rough graph of w(x) so that the parks department can predict when there will be no chage in the water level. you may create a sample polynomial of degree 3 or higher to use in your explanations.