# Horizontal & Vertical Lines

Two special types of lines are “horizontal” and “vertical” lines. Horizontal lines have the form y=b, and have no x-intercept. Vertical lines have the form x=a, and have no y-intercept.

Two special types of lines are “horizontal” and “vertical” lines. Horizontal lines have the form y=b, and have no x-intercept. Vertical lines have the form x=a, and have no y-intercept.