Answer
$B$
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 $B$.
Precalculus (10th Edition)
by Sullivan, Michael
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
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