Question

Determine all intervals on which the graph
of f is decreasing.

Answer 1

The decreasing intervals of the function represented by the graph are (-∝, -5) and (-4, 1)

How to determine the decreasing interval of the graph

from the question, we have the following parameters that can be used in our computation:

The graph

From the graph, we have the following

Increasing interval = (1, 3) and (4, ∝)

This is because the y values increase as x increase

Also, we have

Decreasing interval = (-∝, -5) and (-4, 1)

This is because the y values decrease as x increase

Hence, the decreasing intervals of the graph are (-∝, -5) and (-4, 1)