Direct and Inverse Proportion

Direct and Inverse Proportion

IP 2

\(a^2\propto b\). When \(a=6\), \(b=8\). Throughout this question, \(a>0\).

  1. Find an equation connecting \(a\) and \(b\).

  2. Find \(a\) when \(b=18\).

  3. Find \(b\) when \(a=15\).

Solution:

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Answer:(a) \(a^2=\frac92b\); (b) \(9\); (c) \(50\).

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