Finding Equation of Another Form of Direct Proportion

Finding Equation of Another Form of Direct Proportion

TGM Original

\(y\) is directly proportional to \({{x}^{2}}\). Given that \(y=144\) when \(x=4\), find

  1. an expression for \(y\) in terms of \(x\),
  2. the value(s) of \(x\) when \(y=2025\).

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Answer:(a) \(y = 9x^2\), (b) \(x = \pm 15\)

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