Thursday

March 5, 2015

March 5, 2015

Posted by **ALLI** on Wednesday, September 5, 2012 at 6:53pm.

find the inverse and check answer

f^-1(x)=?

please show work

- college alg -
**Reiny**, Wednesday, September 5, 2012 at 8:31pmI have a strong feeling you meant

f(x) = (6x+9)/(3x-7)

if so, let

y = (6x+9)/(3x-7)

inverse:

x = (6y+9)/(3y-7)

solving that for y ....

3xy - 7x = 6y+9

3xy - 6y = 7x+9

y(3x - 6) = 7x+9

y = (7x+9)/(3x-6)

**f^-1 (x) = (7x+9)/(3x-6)**

check:

f(0) = 9/-7

f^-1(-9/7) = (7(-9/7) + 9)/(3(-9/7)-6)

= 0/...

= 0

(This does not prove that my answer is correct, but shows a very strong probability that it is correct)

**Answer this Question**

**Related Questions**

college alg - the function f(x)=6x+9/3x-7 find the inverse and check answer f^-1...

college alg - the function f(x)=6x+9/3x-7 is one to one. find its inverse and ...

College Algebra - Find the inverse of the function below. Graph the function ...

college elg - the function f(x)=6x+9/3x-7 find inverse and check it f^-1(x)=? ...

pre calculus - Find the inverse of the function below. Graph the function below ...

Math 3 - Find the inverse of the function f(x) = 5 – e^(x-1). Determine the ...

precalculus - Find the inverse of the function below. Graph the function below ...

college algebra - Find the inverse of the following function. Find the domain, ...

algebra - 1 (a) A function passes through the points (0, -5), (1, 0), (2, 7). ...

college alg - use the transformations to identify the graph of the function. ...