SOLUTION: The inverse of f(x) = 3x + 5 is f^-1(x) = a. (x - 5)/3 b. (x - 3)/5 c. (x + 5)/3 d. (x + 3)/5 e. none of these

Algebra ->  Equations -> SOLUTION: The inverse of f(x) = 3x + 5 is f^-1(x) = a. (x - 5)/3 b. (x - 3)/5 c. (x + 5)/3 d. (x + 3)/5 e. none of these      Log On


   



Question 50821: The inverse of f(x) = 3x + 5 is f^-1(x) =
a. (x - 5)/3
b. (x - 3)/5
c. (x + 5)/3
d. (x + 3)/5
e. none of these

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
The inverse of f(x) = 3x + 5 is f^-1(x) =
Rewrite as y=3x+5
Interchange x and y to get:
x=3y+5
Solve for y:
y=(x-5)/3
That is the inverse.
Cheers,
Stan H.