Inverse square-root relationship

Inverse square-root relationship

Secondary 2
4 marks
TGM Original Questions

Optional extension

It is given that \(y\) is inversely proportional to \(\sqrt{x+3}\), and \(y=4\) when \(x=1\).

  1. Express \(y\) in terms of \(x\).[2]
  2. Find \(y\) when \(x=13\).[2]

Solution:

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Answer:(a) \(y=\dfrac8{\sqrt{x+3}}\) (b) \(y=2\).

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