SOLUTION: im really stuck so can someone help me please :(? solve the problem. if y varies directly as x, and y=27 when x=4, find y when x=12

Question 453153: im really stuck so can someone help me please :(?
solve the problem.

if y varies directly as x, and y=27 when x=4, find y when x=12

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
y varies directly as x
---
ly = kx
-----------
Solve for "k" using "y=27 when x=4":
---
27 = k*4
k = 27/4
---
Now the equation is
y = (27/4)x
------
Problem:: Find y when x=12
y = (27/4)12
y = 3*27
y = 81
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Cheers,
Stan H.
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