Question 671862
9y = x - 18
{{{highlight_green(y = (1/9)x - 2)}}}
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Perpendicular slopes are negative reciprocals.
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Using slope of {{{-9}}} and coordinates (2, -9)
-9 = -9(2) + b
b = -9 + 18 = 9
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f(x) = {{{highlight(-9x + 9)}}}
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{{{graph(300,200,-5,5,-5,5,-9x+9, (1/9)x-2)}}}

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