Graphing 22 - Writing Equation from two points 2

Sick of ads?‚Äč Sign up for MathVids Premium
Taught by YourMathGal
  • Currently 4.0/5 Stars.
8883 views | 1 rating
Part of video series
Meets NCTM Standards:
Lesson Description:

Part 2 of how to write the equation of a line if you know 2 points on the line. This is part 22 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 find the slope and y-intercept of a line from two points on the line?
  • 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 find the slope between the points (-10, 13) and (-18, -7) using the slope formula?
  • How do you write the equation of a line in slope-intercept form that passes through (-10, 13) and (-18, -7) 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?
  • How can you check that (-10, 13) and (-18, -7) are both on the line y = 5/2x + 38?
  • How do you write the equation of a line in slope-intercept form that passes through (-10, 13) and (-18, -7) by using the slope-intercept form and solving for b?
  • Staff Review

    • Currently 4.0/5 Stars.
    This lesson is very similar to part 21 of this series. One more example problem is done in this video, and all steps are shown for finding the equation of a line that passes through two points. A few methods of finding the equation that passes between these points are shown.