Answer
Not a function
Work Step by Step
A function needs to pass the "vertical line test". In other words, each x-value can only have one y-value. In this problem, $x = 4.5$ has two y-values. So, this violates the criteria to be a function.
Algebra 2 Common Core
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133186024
ISBN 13:
978-0-13318-602-4
Chapter 2 - Functions, Equations, and Graphs - Chapter Test - Page 127: 3
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