Complete the equation of the inverse of f(x). f(x)=(4x-3)/7

I've been trying to figure out some problems for days and this is one of them. HELP PLEASE!!!!

To find the inverse function, let f(x) = y, interchange x and y, and then re-solve for y; the resulting function of y is the inverse function.

So, start out by letting f(x) = y to get:
y = (4x - 3)/7.

Interchanging x and y gives:
x = (4y - 3)/7.

Then, re-solve for y:
x = (4y - 3)/7
==> 4y - 3 = 7x, by multiplying both sides by 7
==> 4y = 7x + 3, by adding 3 to both sides
==> y = f^-1(x) = (7x + 3)/4, by dividing both sides by 4.

I hope this helps!

well, using the switch and solve method for y = (4x-3)/7, you would exchange all the y for the x.. and therefore you would have,

y = (4x-3)/7
x = (4y-3)/7 and that is your inverse, which assuming you would have to solve for y would be
7x = 4y - 3
7x + 3 = 4y
y = (7x + 3)/4 <--- That is your inverse function. Good luck!

Anyway, would you be so kind to answer my question too please? :D Thank you!

http://answers.yahoo.com/question/index;…

x=(4y-3)/7

7x=4y-3

7x+3=4y

Answer: (7x+3)/4

y = (4x-3) / 7
7y + 3 = 4x
x = (7y + 3) / 4