# Chapter 2 - Functions and Graphs - Concept and Vocabulary Check: 8

AT MORE THAN ONE POINT; FUNCTION.

#### Work Step by Step

This problem checks your understanding of the vertical line test. If any vertical line intersects a graph at more than one point, the graph does not define $y$ as a function of $x$ That is simply because the two or more places that the vertical line crosses the graph show that there is more than one value of $y$ for the $x$ the vertical line represents.

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