Algebra 1: Common Core (15th Edition)

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

Chapter 3 - Solving Inequalities - 3-1 Inequalities and Their Graphs - Practice and Problem-Solving Exercises - Page 169: 40

Answer

The student failed to consider negative values of x.

Work Step by Step

The inequality is always true when x is 0 or greater, but the inequality is not always true when x is negative. For example, let x=-3. Substitute for x and check the inequality. 3x+1>0 3(−3)+1>?0 −9+1>?0 −8/>0 X
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