Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 9 - Section 9.3 - Exponential Functions - Vocabulary, Readiness & Video Check: 4

Answer

yes

Work Step by Step

Yes, the function $y=2^{x}$ is a function because it passes the horizontal line test. Even though the left side of the graph looks constant, the value of $y$ keeps decreasing ans the value of $x$ decreases.
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