For the region where the function is increasing, as x is increasing, y is also increasing.
For the region where the function is decreasing, as x is increasing, y is decreasing.
For the region where the function is constant, as x is increasing, y remains constant
Part 1
The function is sometimes increasing
Increasing interval is (- 4, - 1)
Part 2
The function is sometimes constant
Decreasing interval is (3, infinity)
Part 3
The function is sometimes constant
The constant interval is (- 1, 3)
