Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 7 - Algebra: Graphs, Functions, and Linear Systems - 7.4 Linear Inequalities in Two Variables - Exercise Set 7.4 - Page 454: 33

Answer

See below:

Work Step by Step

Substitute the coordinates of origin in the given system of inequalities and check whether the inequalities are true or not as: \[\begin{align} & x-y\le -1 \\ & 0-0\le -1 \\ & 0\le -1 \end{align}\] The above inequality is not true. Thus, the region shaded is away from the origin for the inequality\[x-y\le -1\]. And, \[\begin{align} & x\ge 2 \\ & 0\ge 2 \\ \end{align}\] The above inequality is not true. Thus, the region shaded is away from the origin for the inequality\[x\ge 2\]. Thus, graph of the system of linear inequalities, \[\begin{align} & x-y\le -1 \\ & x\ge 2 \\ \end{align}\]is the common region of both the graphs and is shown below:
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