Thomas' Calculus 13th Edition

Published by Pearson
ISBN 10: 0-32187-896-5
ISBN 13: 978-0-32187-896-0

Chapter 7: Transcendental Functions - Section 7.1 - Inverse Functions and Their Derivatives - Exercises 7.1 - Page 372: 8

Answer

One-to-one.

Work Step by Step

Since both sides of $f(x)$ are linear and there no horizontal line that intersects the graph of $f(x)$ at more than point, then the function is one-to-one.
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