7. (9 points) Suppose f(x) is a function whose graph is shown below (not to scale).
(-4,4)
(-2,-1)
y
(0,2)
(5,3)
(6,1)
X
(1,-3)
For the following, you may express interval answers either in interval notation (e
tervals (22, 55) and [-16, 3]") or by inequalities (e.g., "for x > 325").
On which interval or intervals (values of x) is the function f(x) increasing
At which value(s) of x does f(x) have a relative maximum?