Question

20Examine the graph.15Select all intervals where the graph is decreasing.1050-1 < x < 02-5O 2

Answer 1

Given the graph in the image, the following are the solution steps to get the intervals where the graph is decreasing

Step 1: Define the decreasing interval of a graph

The graph of a function y = f(x) in an interval is decreasing (or falling) if all of its tangents have negative slopes. That is, it is decreasing if as x increases, y decreases.

Step 2: Pick the intervals where the graph is decreasing

It can be seen from the graph