According to the given graph, we have two increasing intervals and one decreasing interval.
Remember, the function increases when y-values increase while x-values increase. On the other hand, the function decreases when y-values decrease while x-values increase.
Having said that, we can define the following intervals.
[tex]\begin{gathered} I\colon(-\infty,-1)\cup(1,\infty) \\ D\colon\mleft\lbrack-1,1\mright\rbrack \end{gathered}[/tex]
Where I show where the function increase, and D shows where the function decreases.
A second way to express the intervals is as follows.
The function h increases:
[tex]\mleft\lbrace x|(-\inftyThe function h decreases:[tex]\mleft\lbrace x|-1\leq x\leq1\mright\rbrace[/tex]
