Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 6 - Cumulative Review - Page 479: 7


a) $\frac{3}{4}$ b -24 c) 1

Work Step by Step

a)x=-2 and y=-4 $\frac{3x}{2y}$=$\frac{3(-2)}{2(-4)}$=$\frac{-6}{-8}$=$\frac{3}{4}$ b) x=-2 and y=-4 $x^{3}$-$y^{2}$=$(-2)^{3}$-$(-4)^{2}$=-8-16=-24 c)x=-2 and y=-4 $\frac{x-y}{-x}$=$\frac{-2-(-4)}{-(-2)}$= $\frac{-2+4}{2}$=$\frac{2}{2}$=1
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