list the interval(s) on which f is decreasing.\nthe interval(s) on which f is decreasing is/are . (type your…

list the interval(s) on which f is decreasing.\nthe interval(s) on which f is decreasing is/are . (type your answer in interval notation. use a comma to separate answers as needed.)
Answer
Explanation:
Step1: Identify decreasing - part of graph
On a graph, a function $y = f(x)$ is decreasing when as $x$ increases, $y$ decreases.
Step2: Determine intervals
By observing the given graph, we see that the function is decreasing on the intervals $(- 10,-6)$ and $(2,6)$.
Answer:
$(-10,-6),(2,6)$