Create a function with the following domain: x<-4

Question

A math problem that I need help with 

Answer 1

An example of such a function is f(x) = 1/√(-4-x)

 

The domain is the set of all numbers where -4-x>0 (we can't divide by zero and can't take the square root of a negative number).

 

If -4-x>0, then -x>4

 

                  So, x<-4