A proportional relationship between a quantity $y$ and a quantity $x$ that has a constant of proportionality $k$ is represented by the equation _____________.

k x y = 1

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k = x y

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y = k x

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x = k y

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Solution

The correct option is C $y = k x$
A proportional relationship between a quantity $y$ and a quantity $x$ that has a constant of proportionality $k$ is represented by the equation $y = k x .$

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