Answer
$y=10x$
Work Step by Step
Input $y=30$ and $x=3$ into the equation $y=kx$, yielding $30=k(3)$
Solve for $k$ by dividing each side by $3$, $k$ equals 10
Substitute $k$ into the equation $y=kx$, $y=10x$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 5 - Linear Functions - 5-2 Direct Variation - Lesson Check - Page 302: 2
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