Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 7 - Section 7.1 - Systems of Linear Equations in Two Variables - Exercise Set - Page 818: 4

Answer

No

Work Step by Step

Step 1. Plug-in the numbers to the first equation; we have $LHS=5(8)-4(5)=40-20=20=RHS$ Step 2. Plug-in the numbers to the second equation; we have $LHS=3(5)=15$ $RHS=2(8)+1=17\ne LHS$ Step 3. We conclude that the given ordered pair is not a solution of the system.
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