# Chapter 3 - Introduction to Graphing - Mid-Chapter Review - Mixed Review: 19

$m=\text{undefined}$

#### Work Step by Step

Linear equations of the form $x=a$ where $a$ is a real number have a slope, $m$, that is undefined. Hence, the slope of the line with the given equation, $x=-7$, is \begin{array}{l} m=\text{undefined} .\end{array}

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.