Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 6 - Systems of Equations and Inequalities - Chapter Review - Page 409: 16

Answer

Infinitely many solutions

Work Step by Step

You have the equations 3x-3y=21 and y=x-7: Solve. Substitute the second equation into the first: 3x-3(x-7)=21 -distribute- 3x-3x+21=21 -simplify like terms- 21=21 There are infinitely many solutions.
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