Answer
$y=50x$
Work Step by Step
If $y$ varies directly as $x,$ then $y=kx.$
Given $y=10, x=0.2$, we find k
$ 10=k(0.2)\qquad$... divide with 0.2
$k=50$
$y=50x$
Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)
by Bittinger, Marvin L.; Ellenbogen, David J.; Johnson, Barbara L.
Published by
Pearson
ISBN 10:
0-32184-874-8
ISBN 13:
978-0-32184-874-1
Chapter 7 - Functions and Graphs - Study Summary - Practice Exercises - Page 494: 11
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