College Algebra (6th Edition)

Published by Pearson
ISBN 10: 0-32178-228-3
ISBN 13: 978-0-32178-228-1

Chapter 2 - Summary, Review, and Test - Test - Page 327: 1

Answer

b, c, and d are not functions.

Work Step by Step

b. is not a function because there are 3 different y-values for the x-value of 5, and a function must have exactly one corresponding y-value for each x-value. c. is not a function because the graph does not pass the vertical line test. d. is not a function because that is an equation for a circle and the graph of a circle does not pass the vertical line test.
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