Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 10 - 10.1 - Matrices and Systems of Equations - 10.1 Exercises - Page 710: 55

Answer

The system of equations is: x - 2y = 4 y = -1 The variables are: x = 2 y = -1

Work Step by Step

The matrix is represented by the following system of equations: x - 2y = 4 y = -1 Using back substitution to solve the system: x - 2(-1) = 4 x + 2 = 4 x = 2 The variables are: x = 2 y = -1
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