Question

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

Answer 1

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