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What is the inverse of the function f(x) = one-ninthx + 2?

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The inverse is f^-1(x) = 9x - 18.

First, switch x and y:

x = (1/9)y + 2

Then, solve for y:

x - 2 = (1/9)y

9(x - 2) = y

y = 9x - 18

So, f^-1(x) = 9x - 18.

User Nick Duddy
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