Introductory Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-805-X
ISBN 13: 978-0-13417-805-9

Chapter 4 - Review Exercises: 41

Answer

{(3,7)}

Work Step by Step

y-7=0 y-7+7=0+7 y=7 There is no x in this equation therefore the solution must have y equal to 7. Plug this value for y into the other equation to find x. 7x-3y=0 7x-3(7)=0 7x-21=0 7x-21+21=0+21 7x=21 x=$\frac{21}{7}$ x=3 Therefore the solution is {(3,7)}
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