Find the Domain Of $f ( x ) = 3 x + 2$

Multiple Choice

Find the domain of $f ( x ) = 3 x + 2$ .

A) the set of all real numbers except 0
B) the set of all real numbers except $- \frac { 2 } { 3 }$
C) the set of all real numbers except $\sqrt { 3 }$
D) the set of all real numbers