Calculus with Applications (10th Edition)

Published by Pearson
ISBN 10: 0321749006
ISBN 13: 978-0-32174-900-0

Chapter 2 - Nonlinear Functions - 2.1 Properties of Functions - 2.1 Exercises - Page 54: 7


y is $\textbf{not a function}$ of x.

Work Step by Step

A function is a rule that assigns to each element from one set exactly one element from another set. For any x$\neq$0, say x=1 y can be +1 or -1 for the relation to be valid, so this rule is not a function (one x-value can have more than one y-value assigned).
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.