Answer
The input $16$ has two outputs, $-2 $ and $2$. In the case of a function, each input should have exactly one output. So, the given relation is not a function.
Work Step by Step
Work is not needed.
Big Ideas Math - Algebra 1, A Common Core Curriculum
by Larson, Ron; Boswell, Laurie
Published by
Big Ideas Learning LLC
ISBN 10:
978-1-60840-838-2
ISBN 13:
978-1-60840-838-2
Chapter 3 - Graphing Linear Functions - 3.1 - Functions - Exercises - Page 108: 7
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