# How do I identify the domain of y=3 x+2?

##### 1 Answer
Apr 4, 2015

The domain is all real numbers. $D : \left\{x : \left(x = R\right)\right\}$

Domain is the set of all possible $x$ values for a function. The function $y = 3 x + 2$ is a line graphed below:
graph{3x+2 [-10, 10, -5, 5]}

The line extends forever in both directions and is uninterrupted.