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 - Concept and Vocabulary Check - Page 453: 8

Answer

False

Work Step by Step

Consider the inequality, \[x-3y<6\] And, \[2x+3y\ge -6\] Convert into equality sign,i.e., \[x-3y=6\] …… (1) And, \[2x+3y=-6\] ........ (2) Solve both the equations individually, then start from equation (1) \[x-3y=6\] Substitute,\[x=0\]. Then, \[\begin{align} & -3y=6 \\ & y=\frac{6}{\left( -3 \right)} \\ & =-2 \end{align}\] And, when substitute\[y=0\], Then, \[x=6\] Then, the line passes through \[\left( 0,-2 \right)\]and\[\left( 6,0 \right)\]. Solve the equation (2), \[2x+3y=-6\] Substitute\[x=0\]. Then, \[\begin{align} & 3y=-6 \\ & y=\frac{\left( -6 \right)}{3} \\ & =-2 \end{align}\] And, when substitute\[y=0\]. Then, \[\begin{align} & 2x=-6 \\ & x=\frac{\left( -6 \right)}{2} \\ & =-3 \end{align}\] Then, the line passes through \[\left( 0,-2 \right)\]and\[\left( -3,0 \right)\].
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