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: 17

Answer

$$(4,14), \quad (0,4), \quad (-2,-1 ).$$

Work Step by Step

Substitute the value of $x$ and solve for $ y $ to get the ordered pair $ (x,y)$ as follows: $$ 5(4) - 2y = -8 \Longrightarrow -2y=-8-20 \Longrightarrow y =14 ,$$ $$ 5(0) - 2y = -8 \Longrightarrow -2y=-8 \Longrightarrow y =4 ,$$ $$ 5(-2) - 2y = -8 \Longrightarrow -2y=-8+10 \Longrightarrow y =-1 ,$$ Hence, we have the pairs $$(4,14), \quad (0,4), \quad (-2,-1 ).$$
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