Hi,

Note: Labeled Your Inquiry:  Alegebra:Proportions

If x varies inversely as y^2, and x  = 2 when y = 10, find x when y = 2.

Let k represent the constant defining this Inverse porportion

 

 

  k = 100/2 = 50

  k = 50

 

   x = 4/50 = 2/25 

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