Graphing 21 - Writing Equation from two points 1

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Taught by YourMathGal
  • Currently 4.0/5 Stars.
8925 views | 1 rating
Part of video series
Meets NCTM Standards:
Lesson Description:

Covers how to write the equation of a line if you know two points on the line. This is part 21 of a series of videos about graphing lines.

More free YouTube videos by Julie Harland are organized at http://yourmathgal.com

Questions answered by this video:
  • How do you write the equation of a line if you know two points on the line?
  • How do you find the equation of a line that passes through two points by graphing?
  • How do you write the equation of a line that passes through (-2, 1) and (2, -5) by graphing?
  • How do you find the slope and y-intercept of a line from two points on the line?
  • How do you find the slope between the points (-2, 1) and (2, -5) using the slope formula?
  • How do you find the equation of a line that passes through two points by using the slope formula and point-slope form?
  • How do you write the equation of a line in slope-intercept form that passes through (-2, 1) and (2, -5) by using the slope formula and point-slope form?
  • Does it matter which ordered pair you plug into the formula to find the equation of the line that passes through two points?
  • How can you re-write an equation that is in slope-intercept form in standard form?
  • How can you check to make sure that the equation of a line you find is correct?
  • Staff Review

    • Currently 4.0/5 Stars.
    This video covers writing the equation of a line given just two points on the line. This requires the largest amount of work to get to the equation compared with other lessons. All steps of a couple of different methods are explained in this very good, detailed video.