SOLUTION: y is directly proportional to x^2 and y=a for a particular value of x. Find an expression for y in terms of a, when this value of x is doubled.

SOLUTION: y is directly proportional to x^2 and y=a for a particular value of x. Find an expression for y in terms of a, when this value of x is doubled.

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Question 1036457: y is directly proportional to x^2 and y=a for a particular value of x. Find an expression for y in terms of a, when this value of x is doubled.
Answer by Aldorozos(172) (Show Source): You can put this solution on YOUR website!
Please see below for explanation:
http://openstudy.com/updates/4f114d91e4b0a4c24f57ced2
x=sqrt of a/k
k(2sqrtof a/k)^2 = 4a
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