Answer
It is a function.
Work Step by Step
Wherever a vertical line is placed on the graph, it will not intersect the function multiple times. Thus, by the vertical line test, this is a function.
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 4 - An Introduction to Functions - 4-6 Formalizing Relations and Functions - Lesson Check - Page 271: 2
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