Reciprocal changes

Reciprocal changes

Secondary 2
TGM Original Questions
  1. The quantity \(y\) is inversely proportional to \(3x^2\), and \(y=14\) for one value of \(x\). Find \(y\) when that \(x\)-value is halved.
  2. The quantity \(h\) is directly proportional to \(1/m\). Given \(h=3\) when \(m=5\), find \(h\) when \(m=12\).

Solution:

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Answer:(a) \(y=56\); (b) \(h=1.25\).

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