Find the Domain of the Function $f ( x ) = - 8 x + 12$

Multiple Choice

Find the domain of the function.
- $f ( x ) = - 8 x + 12$

A) $( - \infty , \infty )$
B) $( - \infty , 12 ) \cup ( 12 , \infty )$
C) $\left[ \frac { 3 } { 2 } , \infty \right)$
D) $( - \infty , - 8 ) \cup ( - 8 , \infty )$