Answer
$y=\frac{5}{2}x$
$y=30$ when $x=12$
Work Step by Step
$y=kx$
Substitute $x$ with $2$ and $y$ with 5
$5=2k$
$k=5/2$
$y=5x/2$
$y=5(12)/2$
$y=30$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 5 - Linear Functions - Chapter Review - 5-2 Direct Variation - Page 350: 17
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