Answer
$\text{(a) }y=x$
Work Step by Step
The graph contains the points $(0,0)$ and $(2,2)$.
Note that both points satisfy the equation $y=x$:
$0=0$
$2=2$
Thus, the graph represents $y-x$.
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0-32193-104-1
ISBN 13:
978-0-32193-104-7
Chapter F - Foundations: A Prelude to Functions - Section F.3 Lines - F.3 Assess Your Understanding - Page 31: 110
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