#### Answer

One-to-one

#### Work Step by Step

By using the horizontal line test, there is no line that intersects the graph of $f(x)$ in more than point. Thus $f(x)$ is one-to-one.

Published by
Pearson

ISBN 10:
0-32187-896-5

ISBN 13:
978-0-32187-896-0

One-to-one

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