College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter 5, Systems of Equations and Inequalities - Section 5.1 - Systems of Linear Equations in Two Variations - 5.1 Exercises - Page 447: 39


Infinite number of solutions

Work Step by Step

Multiply the first equation by 3 6x - 18y = 30 Multiply the second equation by 2 -6x + 18y = -30 Add both equations together 6x - 18y = 30 -6x + 18y = -30 0 = 0 This means the two equations are actually the same line. All their points intersect one another. Therefore there is an infinite number of solutions
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