What is the inverse of the function f(x) = 2x + 1?

The inverse  i.e f^-1 (x) is (x-1)/2

Step-by-step explanation:

The main method for finding inverse function is as follows:

We let y =f(x), and write the function as y = 2x + 1.

Next, we swap the x and y, then rearrange to make y the subject. So i.e:

x = 2y + 1 (just swapping x and y)

x - 1 = 2y

y = (x-1)/2  (solving for x).

So f^-1 (x) = (x-1)/2

step-by-step explanation:

for exempl this   system of equations   y = x - 3

                                                                y = 2x - 5

look   the line : y = x -3     ( red)

                            the line : y = 2x -5 ( bleus)