Answer
See below.
Work Step by Step
Solid line means the line is also part of the solution set i.e. all points on the line are also solutions to the inequality. (it is when it is a not strict inequality, i.e. $\leq$ or $\geq$)
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 4 - Section 4.4 - Linear Inequalities in Two Variables - Exercise Set - Page 296: 68
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