SOLUTION
Given the question in the image, the following are the solution steps to answer the question.
STEP 1: write the given function
STEP 2: Define the points at which a graph is increasing.
We say that a function is increasing on an interval if the function values increase as the input values increase within that interval. The derivative of a function may be used to determine whether the function is increasing or decreasing on any intervals in its domain. If f′(x) > 0 at each point in an interval I, then the function is said to be increasing on I. f′(x) < 0 at each point in an interval I, then the function is said to be decreasing on I.
STEP 3: Show the points where the graph was increasing
We write the x coordinates of the intervals, therefore the intervals will be:
