Precalculus (10th Edition)

Published by Pearson
ISBN 10: 0-32197-907-9
ISBN 13: 978-0-32197-907-0

Chapter 2 - Functions and Their Graphs - 2.4 Library of Functions; Piecewise-defined Functions - 2.4 Assess Your Understanding - Page 90: 15



Work Step by Step

The graph of the identity function (which is $f(x)=x$) goes from the bottom left to the top right and makes a $45^o$ angle with both the $x$ and $y$ axes. Hence, the answer is $B$.
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