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 - Lesson Check: 6

Answer

This depends on personal preference.

Work Step by Step

While this is a matter of personal preference, generally it is agreed that the vertical line test is better if there is a graph of the relationship while a mapping diagram works better in situations where no graph is provided.
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