SOLUTION: If y varies directly as the square of x and y=-54 when x=9, then y=-1 1/3 when x=6.

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Question 1004379: If y varies directly as the square of x and y=-54 when x=9, then y=-1 1/3 when x=6.
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
We write this as
y+=+kx%5E2
Use the facts to find k...
-54 = k(9^2)
-54 = 81k
k = -54/81 = -2/3
Thus the relationship is
y+=+%28-2%2F3%29x%5E2