Calculus 10th Edition

Published by Brooks Cole
ISBN 10: 1-28505-709-0
ISBN 13: 978-1-28505-709-5

Chapter P - P.3 - Functions and Their Graphs - Exercises - Page 28: 49

Answer

y is not a function of x.

Work Step by Step

First rearrange the function by solving for y. You should know that when we take square roots we end up with two solutions. In this case a single value of y will also have two solutions. This contradicts the definition of the function, therefore y is not a function of x.
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