# What are variable expressions?

Mar 19, 2015

Variable expressions are expressions that involve variables, which are symbols that represent changing quantities. (See http://socratic.org/questions/what-are-variables for reference). The value of the expression will change as the value of the variable changes.

For example, let's say with have the equation $x + 5$

When $x = 1$, then $x + 5 = 6$

When $x = 2$ then $x + 5 = 7$