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If (1/9x)-2 , what is f–1(x)?

User SageJustus
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1 Answer

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f(x) = (1/9 x) - 2
y = (1/9 x) - 2
(1/9 x) = y + 2
x = 9(y + 2) = 9y + 18

f^-1(x) = 9x + 18
User Khinsu
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