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Functions and Graphs

Functions and Graphs

Secondary 3
4 marks

\(y\) varies inversely as \(x\). When \(x=4\), \(y=6\). Find

  1. the formula connecting \(y\) and \(x\);

    [2]

  2. \(y\) when \(x=10\);

    [1]

  3. \(x\) when \(y=-8\).

    [1]

Solution:

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Answer:(a) \(y=\frac{24}{x}\); (b) \(y=2.4\); (c) \(x=-3\).

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