Instructional Video

Graphs: Parallel lines

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This Graphs: Parallel lines instructional video also includes:

Parallel lines must always have the same slope. Learners use this bit of information to extend their equation writing skills. A video lesson explains how to write the equation of a line parallel to a given line and through a given point. The video instructor then demonstrates the calculations using slope-intercept form.

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CCSS: Adaptable
Additional Tags
Instructional Ideas
  • Have pupils begin by completing a discovery activity to learn that the slopes of parallel lines are equal
  • Extend the lesson to include perpendicular lines for more advanced pupils
Classroom Considerations
  • Assumes students know how to write the equation of a line given a point and slope
Pros
  • Relates the equation of the lines to their graph
  • Uses visuals to reinforce the concepts
Cons
  • None