Answer
not a function
Work Step by Step
Use the vertical line test, we can see that the graph will not pass, thus it is not a function.
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0-32193-104-1
ISBN 13:
978-0-32193-104-7
Chapter 1 - Functions and Their Graphs - Section 1.2 The Graph of a Function - 1.2 Assess Your Understanding - Page 62: 11
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