Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 1 - Mid-Chapter Check Point: 1

Answer

Not a function Domain = $\left\{1, 2\right\}$ Range = $\left\{-6, 4, 6\right\}$

Work Step by Step

The first coordinate $2$ is paired with two different second coordinates, therefore the relation is NOT a function. The domain is the set that contains the first components so: Domain = $\left\{1, 2\right\}$ The range is the set that contains all the second components so: Range = $\left\{-6, 4, 6\right\}$
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