SOLUTION: Please Help me solve this: Let F(x)=2x-3. Find F^-1(x)

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Question 619140: Please Help me solve this:
Let F(x)=2x-3. Find F^-1(x)
Found 2 solutions by nerdybill, IFY:
Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
Let F(x)=2x-3. Find F^-1(x)
this just means they want the inverse of f(x).
.
Replace f(x) with y:
y = 2x - 3
Switch the x and y's and solve for y:
x = 2y - 3
x + 3 = 2y
x/2 + 3/2 = y
.
So,
F^-1(x) = x/2 + 3/2

Answer by IFY(62) About Me  (Show Source):
You can put this solution on YOUR website!


y = 2x - 3
x = 2y - 3
f^ -1( x) = 2y - 3