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Popular Functions >

inverse of f(x)=(x+3)/(x+9)

Solution

inverse

f (x) = \frac{x + 3}{x + 9}

Solution

\frac{3 - 9 x}{x - 1}

Solution steps

y = \frac{x + 3}{x + 9}

Replace

x

with

y

x = \frac{y + 3}{y + 9}

Solve for

y, x = \frac{y + 3}{y + 9}

\frac{3 - 9 x}{x - 1}

Graph

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Frequently Asked Questions (FAQ)

What is the inverse of f(x)=(x+3)/(x+9) ?
The inverse of f(x)=(x+3)/(x+9) is (3-9x)/(x-1)