Question

Please help ill give a medal...(:
If f(x)=1/2x-6 , what is the equation for f^–1(x)?

Answer 1

\[y = \frac{ 1 }{ 2x-6 }\]
\[2x-6 = \frac{ 1 }{ y }\]
\[x = \frac{ 1 }{ 2y } + 3\]
Now interchange x with y for getting the inverse function.

Answer 2

hmmm im still confused

Answer 3

the beginning equation was \[f(x)=\frac{ 1 }{ 2 }x-6\]

Answer 4

oh, i read it that way.
Now all you need to do is bring 'x' on one side and leave all other terms the other side.

Answer 5

what do you mean by interchanging x and y to get the inverse?

Answer 6

In place of x,put y.
In place of y,put x.
From the definition of inverse, you can do this.

Answer 7

ok thank you