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 4.1 - Solving Systems of Linear Equations by Graphing - Exercise Set - Page 291: 8

Answer

$(200,700)$ is a solution of the system.

Work Step by Step

An ordered pair is a solution to the system if it satisfies both equatons: $ \begin{array}{lllll} -4(200)+(700) & =-100 & .... & 0.05(200)-0.06(700) & =-32\\ -800+700 & =-100 & & 10-42 & =-32\\ -100 & =-100 & & -32 & =-32\\ TRUE & & & TRUE & \end{array} $ $(200,700)$ is a solution of the system.
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