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write an equation of the affine function whose graph is perpendicular to the graph of f x 5x 1 and passes through the poin

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Write an equation of the affine function whose graph is perpendicular to the graph of f(x) = 5x − 1 and passes through the point (5, 20).

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Answer to a math question Write an equation of the affine function whose graph is perpendicular to the graph of f(x) = 5x − 1 and passes through the point (5, 20).

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$y=-\frac{1}{5}x+21$

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