What is the domain and range of y = 3x+6?

Mar 23, 2018

$\text{dom: } x \in \mathbb{R}$
$\text{ran: } y \in \mathbb{R}$
Linear functions generally have a domain and range of $\mathbb{R}$ (all real values). Unless there is a restriction of the domain of the linear function, the domain and range of $y$ will be $\mathbb{R}$.