Determining if Lines are Parallel, Perpendicular, or Neither by Calculating their Slopes

In this video, I show how to determine whether two lines are parallel, perpendicular, or neither by calculating their slopes. Sometimes lines look like they might be parallel, or perpendicular... but how can we tell for sure? We can calculate the slopes of the lines. If the slopes are the same, the lines are parallel; if the slopes are negative reciprocals of each other, the lines are perpendicular!

[t_alex]

Omg praise the lord thanks so much i bet you I wouldn’t be able to pass this test next week with out you x😁😆