SOLUTION: If y varies directly with x and y = -4.5 when x = 13.5, find x when y = 24.

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Question 230410: If y varies directly with x and y = -4.5 when x = 13.5, find x when y = 24.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
If y varies directly with x
y = kx
---------------
Now solve for "k":
and y = -4.5 when x = 13.5,
-4.5 = k*13.5
k = -1/3
--------------------------
find x when y = 24.
24 = (1/3)x
x = 72
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Cheers,
Stan H.