Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 8 - Section 8.1 - Linear Equations with Two Variables - Exercises - Page 297: 9

Answer

$$(2,4), \quad (0,-5), \quad (-4,-23 )$$

Work Step by Step

Substitute the value of $x$ and solve for $ y $ to get the ordered pair $ (x,y)$ as follows: $$ 9(2) - 2y = 10 \Longrightarrow -2 y=-8 \Longrightarrow y=4 ,$$ $$ 9(0) - 2y = 10 \Longrightarrow -2 y=10 \Longrightarrow y=-5 ,$$ $$ 9(-4) - 2y = 10 \Longrightarrow -2 y=46 \Longrightarrow y=-23 ,$$ Hence, we have the pairs $$(2,4), \quad (0,-5), \quad (-4,-23 )$$
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