Question

What is the inverse function of d(x)=2x-4

Answer 1

Let y=2x-4
now, write this equation in terms of x.

2x = y + 4
Therefore, 
x= y/2 + 2

Now interchange x and y,

Therefore, the inverse is y = x/4 +2 

Answer 2

let y=2x-4

now, write this equation in terms of x.

2x = y + 4

Therefore,  

x= y/2 + 2

Now interchange x and y,

Therefore, the inverse is y = x/4 +2