Question

What is the inverse of the function f(x) = x +3?

Answer 1

Answer:

${f}^{ - 1} (x) = x - 3$

Step-by-step explanation:

Let,

y = x + 3

Here, x is the input to get a value for y. Hence,

x = y - 3

Now, substituting a value for y gives us a value for x which is an inverse function for f( x ).

${f}^{ - 1} (x) = x - 3$

Where we write y as the input which is x.