Precalculus (10th Edition)

Published by Pearson
ISBN 10: 0-32197-907-9
ISBN 13: 978-0-32197-907-0

Chapter 5 - Exponential and Logarithmic Functions - Chapter Review - Cumulative Review - Page 348: 1


Function but not one-to-one

Work Step by Step

It is a function because for every x-value there is a unique y-value (it passes the Vertical Line Test). But it is not a one-to-one function because it fails the Horizontal Line Test and hence the y-values appear not only uniquely.
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