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: 7


(5,4) (0,2) (-3,0.8)

Work Step by Step

Substitute each given value for x and solve for y to create ordered pairs (x,y). $-2(5)+5y=10$ $-10+5y=10\longrightarrow$ add 10 to each side $5y=20\longrightarrow$ divide each side by 5 $y=4$ $-2(0)+5y=10$ $5y=10\longrightarrow$ divide each side by 5 $y=2$ $-2(-3)+5y=10$ $6+5y=10\longrightarrow$ subtract 6 from each side $5y=4\longrightarrow$ divide each side by 5 $y=0.8$
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