How to write the equation of a line parallel to another through a point

The video tutorial explains how to find and graph a line parallel to a given vertical line. It begins by discussing why the slope-intercept form cannot be used for vertical lines and introduces the concept of undefined slopes. The tutorial then demonstrates how to graph vertical lines and find a line parallel to a given vertical line by ensuring it has the same undefined slope. Finally, it shows how to draw a parallel vertical line through a specific point.

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