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# Proportion

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Suppose that $\alpha$ is inversely proportional to $\beta$. If $\alpha = -6$ when $\beta = 18$, find $\alpha$ when $\beta = 12$.

Sep 3, 2021

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a = k/b

ab = k

k = -108

a = -108/b

a = -108/12 = 9

Sep 3, 2021