Answer
The equation does not define $y$ as a function of $x$.
Work Step by Step
$y =± \sqrt{ 1− 2x}$
If $x =0 , y = =± 1$ .
This equation is not a function, since a distinct x-value corresponds to two different y-values.
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 - 2.1 Functions - 2.1 Assess Your Understanding - Page 57: 36
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