What is the domain of $f (x) = 7 x + 4$ $f(x)=7x+4$ ?

Question

5813 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-03-18T23:49:38

$x inRR$

This is just the equation of a line, where $7$ is the slope and $4$ is the y-intercept, so the function is continuous.

Since our function $f(x)$ is continuous, its domain is $x inRR$ , meaning $x$ can take on any value.

The point is, no input for $x$ will make this function undefined, thus its domain is $x inRR$ .

What is the domain of f(x)=7x+4f(x)=7x+4f(x)=7x+4?