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: 23

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: \[\begin{align} & 3x+6y\le 6 \\ & 3\left( 0 \right)+6\left( 0 \right)\le 6 \\ & 0+0\le 6 \\ & 0\le 6 \end{align}\] The above inequality is true. Thus, the region shaded is towards the origin for the inequality\[3x+6y\le 6\]. And, \[\begin{align} & 2x+y\le 8 \\ & 2\left( 0 \right)+0\le 8 \\ & 0+0\le 8 \\ & 0\le 8 \\ \end{align}\] The above inequality is true. Thus, the region shaded is towards the origin for the inequality\[2x+y\le 8\]. Thus, the graph of the system of linear inequalities, \[\begin{align} & 3x+6y\le 6 \\ & 2x+y\le 8 \\ \end{align}\]is the common region of both the graphs and is shown:
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