## Intermediate Algebra (6th Edition)

Published by Pearson

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

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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