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Jennette904 Jennette904
  • 21-04-2015
  • Mathematics
Answered

Variable y varies directly with variable x, and y = 9 when x = 5.


What is the constant of variation in decimal form?

Verified Answer :

iGreen
iGreen iGreen
  • 21-04-2015

Direct variation:

\(\sf~y=kx\)

Plug in what we know:

\(\sf~9=k(5)\)

\(\sf~9=5k\)

Divide 5 to both sides:

\(\sf~k=\boxed{\sf1.8}\)

So the constant of variation is 1.8.

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