Algebra 2 Common Core

Published by Prentice Hall
ISBN 10: 0133186024
ISBN 13: 978-0-13318-602-4

Chapter 3 - Linear Systems - 3-2 Solving Systems Algebraically - Practice and Problem-Solving Exercises - Page 146: 10


x=.5; y=2.5

Work Step by Step

We are told that y=5x. Because the expression 4x+2y has two variables in it, we must make it in terms of one variable by substituting out a variable. Thus, we substitute 5x for y (because we know that y=5x) to obtain 4x + 10x =7. We solve to obtain that x equals .5. We plug x=.5 into y=5x to find that y equals 2.5.
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.