Trigonometry 7th Edition

Published by Cengage Learning
ISBN 10: 1111826854
ISBN 13: 978-1-11182-685-7

Chapter 1 - Section 1.2 - The Rectangular Coordinate System - 1.2 Problem Set - Page 23: 26

Answer

A negative value of $a$ causes the parabola's ends to point downward.
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Work Step by Step

A function with a negative coefficient $a$ is the reflection of a function with a positive coefficient $a$ about the $x-$ axis.
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