Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 3 - Section 3.1 - Systems of Linear Equations in Two Variables - Exercise Set - Page 190: 4



Work Step by Step

Our aim is to determine that whether the given ordered pair is a solution or not. In order to find this we will plug the given values of $x$ and $y$ , respectively. Plug $x=4$ and $y=2$ in the given ordered pair of equations. $2x-5y=-2$ $2(4)-5(2)=-2$ Thus, $-2=-2$ $3x+4y=18$ $3(4)+4(2)=18$ Thus, $20 \neq 18$ Hence, it is not a solution.
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