Question

How do you find the domain of `f(x)=3x+6`?

Answer 1

Domain `{x|x " is " RR}` or in interval notation `(-oo,oo)`

Explanation:

`f(x)=3x+6` is the equation of a line, there are no restrictions of input on any lines so the domain is all real numbers.

Domain `{x|x " is " RR}` or in interval notation `(-oo,oo)`

graph{3x+6 [-10.29, 9.71, -1.92, 8.08]}