Introductory Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-805-X
ISBN 13: 978-0-13417-805-9

Chapter 4 - Section 4.2 - Solving Systems of Linear Equations by the Substitution Method - Exercise Set: 8

Answer

{(4,1)}

Work Step by Step

x-4y=0 x=0+4y x=4y Plug this value for x into the other equation. 2x+3y=11 2(4y)+3y=11 8y+3y=11 11y=11 y=$\frac{11}{11}$ y=1 Plug this back into the first equation to find x. x=4y x=4(1) x=4 Therefore the solution is {(4,1)}
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