Consider the function $f(x)= \frac { 2 } { 7 - x }$.

1. What is $f(7)$?

   Hint (a):

   Substitute $7$ for $x$.

   Answer (a):

   undefined

2. What is the domain of $f(x)$?

   Hint (b):

   Division by $0$ is undefined. What $x$-value causes division by $0$ for this function?
   $x$ cannot have that value.

3. What is the range of $f(x)$?

   Answer (c):

   $f(x)\neq0$