Question

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

Explanation:

Step1: Recall decreasing - function property

A function \(y = f(x)\) is decreasing on an interval if for any two points \(x_1\) and \(x_2\) in the interval with \(x_1

Step2: Identify intervals from the graph

By observing the given graph of \(y = f(x)\), we see that the function is decreasing on the intervals \((-8,-6)\) and \((2,9)\).

Answer:

\((-8,-6)\) and \((2,9)\)