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

Dec 5, 2017

The equation $x = - 7$ is a vertical line where for each and every value of $y$, $x$ equals $- 7$.
There Domain is the scope of values the variable $x$ can have. In this equation the only value $x$ can have is $- 7$. Therefore the Domain of this equation is $\left\{- 7\right\}$
The Range is the set of values the $y$ variable can be. In this case the $y$ variable can be any and all Real Numbers. Therefore the Range for this function is the set of all Real Numbers: $\left\{\mathbb{R}\right\}$