Posted by **ladybug** on Saturday, October 6, 2012 at 1:56pm.

the function f(x)=4/x-7 is one to one

a. find the inverse of f

b. graph f, f^-1, and y=x on the same set of axes

find the inverse of f

f^-1(x)=

- pre-calculus -
**Steve**, Saturday, October 6, 2012 at 2:34pm
y = 4/x - 7

x = 4/(y+7)

so, f(x) = 4/x - 7

f^-1(x) = 4/(x+7)

do the graphs here:

http://rechneronline.de/function-graphs/

If yu meant y = 4/(x-7), of course, things are different.

## Answer this Question

## Related Questions

- Pre-Calc - Does y=1/x have an inverse? It is a one-to-one function, so it should...
- Maths B - (a) What is the inverse of the function y = 3x2 ? (b) On the same set ...
- pre calculus - Find the inverse of the function below. Graph the function below ...
- Math - Find inverse of f if f(x)= x^2-4x+3, (for x is smaller than and equal to ...
- Pre-Calculus - Find the inverse function for the function f(x)=2^(x)+1/2^(x)-1 ...
- algebra - 1 (a) A function passes through the points (0, -5), (1, 0), (2, 7). ...
- Pre-Calculus - The function f(x)= x^4 is not one-to-one. Find a suitable ...
- pre calculus - The graph of a one-to-one function is shown below. Draw the graph...
- pre calculus - Find the inverse of the following function. Find the domain, ...
- precalculus - Find the inverse of the function below. Graph the function below ...