# How do I find the domain of f(x)=7x+4?

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 $y = 7 x + 4$ is a line graphed below:
graph{7x+4 [-10, 10, -5, 5]}
The line extends forever in both directions and is uninterrupted.