Question

I need help on this question please?

Answer 1

Part (a)

If
`f` is increasing on an interval, then the
`y`-values of the points on the graph increase as the
`x`-values increase. From the graph of
`f`, we see that
`f` is increasing on the intervals
`\boxed{(-\infty, 2) \cup (4,5)}`.

Part (b)

If
`f` is decreasing on an interval, then the
`y`-values of the points on the graph decrease as the
`x`-values increase. From the graph of
`f`, we see that
`f` is increasing on the intervals
`\boxed{(2, 4) \cup (5, \infty)}`.