Answer
Not a function
Work Step by Step
Let $y=2$:
$x=y^2+2$
$x=2^2+2$
$x=4+2$
$x=6$
Let $y=-2$:
$x=y^2+2$
$x=(-2)^2+2$
$x=4+2$
$x=6$
Since $x=6$ yields two different values for $y$, the equation is not a function.
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 8 - Section 8.2 - Introduction to Functions - Exercise Set - Page 585: 28
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