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

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Answer 1 · 2015-04-04T02:00:18

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

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

The line extends forever in both directions and is uninterrupted.

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