Use the Vertical Line Test to Identify Functions
Use the vertical line test to determine whether or not the graph is a graph in which y is a function of x.
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A) not a function
B) function

Question

Use the Vertical Line Test to Identify Functions
Use the vertical line test to determine whether or not the graph is a graph in which y is a function of x.
-

A) not a function 
B) function

Quizplus · Accepted Answer

The graph intersects the vertical line twice in some places, indicating that multiple points on the graph have the same x-coordinate but different y-coordinates. This violates the vertical line test, which states that a graph is a function if no vertical line intersects it more than once. Therefore, the graph is not a function.