## Precalculus (6th Edition)

Published by Pearson

# Chapter 2 - Graphs and Functions - 2.3 Functions - 2.3 Exercises: 29

#### Answer

The relation does not define a function.

#### Work Step by Step

Note some vertical lines (e.g., $x=4$) will pass through the graph at two points. This means that the graph fails the vertical line test. Thus, the given graph does not represent a function.

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