Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 2 - 2.2 - Functions - 2.2 Exercises - Page 182: 10

Answer

(a) Function (b) Not a Function (c) Function (d) Not a Function

Work Step by Step

(a) Each element of A is matched with exactly one element of B, so it does represent a function. (b) The element 1 in A is matched with two elements, –2 and 1 of B, so it does not represent a function. (c) Each element of A is matched with exactly one element of B, so it does represent a function. (d) The element 2 in A is not matched with an element of B, so the relation does not represent a function.
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