Question

Inverse of the function f(x) = 2x + 5?

Answer 1

Answer:

          x - 5

y = --------------

             2

Step-by-step explanation:

1.  Replace "f(x)" with "y:"  y = 2x + 5

2.  Interchange x and y:  x = 2y + 5

3.  Solve this result for y:

2y = x - 5, or

       

          x - 5

y = --------------

             2

Answer 2

Answer:

$y^{-1} =\frac{1}{2} x-\frac{5}{2}$

Step-by-step explanation: