This lesson focuses on graphing horizontal and vertical lines in the form x=k or y=k, where k is a number. The video demonstrates how to plot three ordered pairs with one variable fixed and the other variable varying, and how to connect these points to form a line. The lesson also highlights that x=k is a vertical line passing through (k,0), while y=k is a horizontal line passing through (0,k). The video encourages viewers to avoid memorization and instead rely on plotting ordered pairs to graph lines.
Covers the special cases of graphing horizontal and vertical lines which are in the form x=k or y=k, where k is any number. This is part 6 of a series of videos about graphing lines.
More free YouTube videos by Julie Harland are organized at http://yourmathgal.com