Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 4 - An Introduction to Functions - 4-6 Formalizing Relations and Functions - Practice and Problem-Solving Exercises - Page 273: 36


The pairs {(1,3), (3,5), (7,5)} is a function but the inverse {(3,1),(5,3),(5,7)} is not a function.

Work Step by Step

The pairs {(1,3), (3,5), (7,5)} is a function because it passes the vertical line as one x coordinate has only one y value. But the inverse of the ordered pairs which is {(3,1),(5,3),(5,7)} is not a function because it does not pass the vertical line test as one x coordinate has 2 y values.
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