Calculus, 10th Edition (Anton)

Published by Wiley
ISBN 10: 0-47064-772-8
ISBN 13: 978-0-47064-772-1

Chapter 0 - Before Calculus - 0.1 Functions - Exercises Set 0.1: 3

Answer

In (a) and (b) y is a function of x, $\forall x$. In (c) and (d) y is not a function of x.

Work Step by Step

In (a) and (b) y is a function of x for every x, because there is only one value of y for every x. In (c) and (d) y is not a function of x, because there are values of x that defines more than one value of y. See 0.1.1 definition.
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