Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 9 - Inequalities and Problem Solving - 9.4 Inequalities in Two Variables - 9.4 Exercise Set - Page 611: 57


The answer is below.

Work Step by Step

A dashed line indicates that the line is not part of the solution. This occurs with strictly less than or strictly greater than signs, for values that are equal are not included. However, with $\leq\ OR \ \geq$ signs, the line itself is included as if the two sides are equal, so the solution is included.
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