# How do you find the domain and range of y = 2x - 7?

Jun 2, 2018

#### Answer:

Domain $\left\{x | x \text{ is } \mathbb{R}\right\}$
Range $\left\{y | y \text{ is } \mathbb{R}\right\}$

#### Explanation:

$y = 2 x - 7$ is the equation of a line with slope $m = 2$, the domain and range of any line with $m \ne 0$ and $m \ne \emptyset$ is all real numbers:

Domain $\left\{x | x \text{ is } \mathbb{R}\right\}$
Range $\left\{y | y \text{ is } \mathbb{R}\right\}$