Answer
Direct variation
$x=.9$, $y=63$
Work Step by Step
$28/.4 = 70$
$84/1.2 = 70$
$70x =y$
$70x=63$
$x = 63/70 = .9$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 11 - Rational Expressions and Functions - 11-6 Inverse Variation - Practice and Problem-Solving Exercises - Page 692: 44
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