y is inversely proportion to the square of x. y=10 when x=5. Express y in terms of x.

y is proportion to 1/x2This can be written as y=k/x2 where is a constant of proportionality. Given that y=10 when x=5, k can be found as yx2 which is equal to 25. Therefore; y=25/x2.

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Answered by Evan H. Maths tutor

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