Direct-inverse combined formula

Direct-inverse combined formula

Secondary 2
TGM Original Questions

The quantity \(y\) varies directly with \(T\) and inversely with \(x^2\). Given \(y=5\) when \(T=4,x=2\):

  1. express \(y\) in terms of \(T,x\)
  2. find \(y\) when \(T=6,x=5\).

Solution:

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Answer:(a) \(y=\frac{5T}{x^2}\); (b) \(y=1.2\).

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