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 vertical line test indicates that there are multiple x-values that correspond to the same y-value, meaning that there are multiple outputs for a single input, violating the definition of a function.