Use the vertical line test to determine whether or not the graph is a graph of a function.
-

Question

Quizplus · Accepted Answer

The vertical line test is a test to see if a graph represents a function. If any vertical line passes through the graph more than once, then the graph does not represent a function. In the given graph, a vertical line can be drawn passing through the point where x=1 and it passes through the graph more than once, which means it does not represent a function.

Use the Vertical Line Test to Determine Whether or Not