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 \(x=1\).
- Express \(y\) in terms of \(x\).[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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