How do you find the domain of r(x)=(x+2)/8?

Jun 16, 2018

$\left\{x | x \in \mathbb{R}\right\}$

Explanation:

This function is just a line:

$r \left(x\right) = \frac{x + 2}{8}$

$r \left(x\right) = \frac{1}{8} x + \frac{1}{4}$

All lines have a domain and range of all real numbers.

$\left\{x | x \in \mathbb{R}\right\}$

graph{(x+2)/8 [-10, 10, -5, 5]}