Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 1 - Foundations for Algebra - 1-9 Patterns, Equations, and Graphs - Mixed Review - Page 66: 47

Answer

The ordered pair is a solution.

Work Step by Step

Substitute the given value and determine whether the resulting equation is true. $80=4a$ $80\overset?=4(20)$ $80=80\checkmark$ The two sides of the equation are equal, so 20 is a solution.
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