The Graph of a Linear Equation—Horizontal and Vertical Lines

Graph linear equations in standard form with one coefficient equal to zero. The lesson plan reviews graphing lines in standard form and moves to having y-coefficient zero. Pupils determine the orientation of the line and, through a discussion, realize all equations of that form will have the same orientation. They move on to the x-coefficient of being zero.

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CCSS: Designed
Additional Tags
Instructional Ideas
  • Input the equation for a horizontal or vertical line into a graphing calculator and view the table it creates
  • Have the class identify the equation of a given graph
Classroom Considerations
  • Requires graph paper
  • The 14th segment of the 33-part series
  • Answer key uses color to make the graphs visible
  • Lesson is designed around an example followed by a discussion
  • None
Common Core