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 - 7.3 Systems of Linear Equations in Two Variables - Exercise Set 7.3 - Page 445: 38

Answer

No solution and the solution set is\[\phi \].

Work Step by Step

Substitute\[y=2-3x\]in the equation\[6x+2y=7\], to get: \[\begin{align} & 6x+2\left( 2-3x \right)=7 \\ & 6x+4-6x=7 \\ & 4\ne 7 \end{align}\] Since\[4\ne 7\], it implies the system of the equation does not have a solution. Therefore, the solution set is\[\phi \]. .
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