Question

What is the inverse of the function

Answer 1

Answer:

y = (x - 1) / 2            (First answer choice)

Step-by-step explanation:

1) Start with f(x) = 2x + 1

2) Replace f(x) with y:  y = 2x + 1

3) Interchange x and y:  x = 2y + 1

4) Solve this result for y:  2y = x - 1, or y = (x - 1) / 2       (This matches the first                      

                                                                                          answer choice.)