Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 7 - Algebra: Graphs, Functions, and Linear Systems - 7.1 Graphing and Functions - Concept and Vocabulary Check - Page 417: 9

Answer

If any vertical line intersects a graph in more than single point, the graph does not define y as a function of x.

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