Answer:
- increasing: (-1, ∞)
- decreasing: (-∞, -1)
- constant: nowhere
Explanation:
A function is increasing when it is rising to the right. Here, that is everywhere right of x=-1.
A function is decreasing when it is falling to the right. Here, that is everywhere left of x=-1.
A function is constant when its graph is horizontal. There are no places on this graph like that.