Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 6 - Systems of Equations and Inequalities - 6-4 Application of Linear Systems - Practice and Problem-Solving Exercises - Page 387: 19


Using substitution is most apt because you are given the value of y in terms of x so you just need to substitute this in the first equation to get the value of x.

Work Step by Step

First, substitute 4x in the first equation and then solve for x. Next substitute the value of x in the second equation and find the value of y. This will lead to the solution.
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