Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 1 - Section 1.2 - Basics of Functions and Their Graphs - Concept and Vocabulary Check - Page 175: 4



Work Step by Step

The given equation is quadratic whose graph is a parabola that opens either upward or downward. For a parabola that opens upward or downward, all vertical lines will pass through the graph in at most one point. This means that the graph passes the vertical line test. Thus, the given equation is a function. Therefore, the given statement is true.
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