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: 14

Answer

$$(1,-4), \quad (0,-8), \quad (-3,-20 ).$$

Work Step by Step

Substitute the value of $x$ and solve for $ y $ to get the ordered pair $ (x,y)$ as follows: $$ 4(1) - y = 8 \Longrightarrow -y=-4+8 \Longrightarrow y =-4 ,$$ $$ 4(0) - y = 8 \Longrightarrow -y=8 \Longrightarrow y =-8 ,$$ $$ 4(-3) - y = 8 \Longrightarrow -y=12+8 \Longrightarrow y =-20 ,$$ Hence, we have the pairs $$(1,-4), \quad (0,-8), \quad (-3,-20 ).$$
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