Intermediate Algebra (12th Edition)

Published by Pearson
ISBN 10: 0321969359
ISBN 13: 978-0-32196-935-4

Chapter 3 - Section 3.1 - Systems of Linear Equations in Two Variables - 3.1 Exercises - Page 228: 68

Answer

$x=-1$ $y=-11$

Work Step by Step

Equation 2 is already solved for y, we substitute y in the first equation, with the expression in the second: $6x-y=5$ $6x-11x=-5x=5$ $x=-1$ $y=11x=-11$ We need to check, if it is the right solution, we substitute x with -1 and y with -11: $6(-1)-(-11)=5$ $\checkmark$ $-11=11(-1)$ $\checkmark$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.