Graphing 12 - Slope between two points

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Taught by YourMathGal
  • Currently 4.0/5 Stars.
9632 views | 3 ratings
Part of video series
Meets NCTM Standards:
Lesson Summary:

In this lesson on graphing, the focus is on finding the slope of a line passing through two points by using the algebraic formula for slope. The instructor provides several examples to illustrate the formula, emphasizing the importance of the order in which the ordered pairs are entered and the need to simplify the final answer. The lesson also includes a reminder that a slope of zero indicates a horizontal line, while an undefined slope indicates a vertical line.

Lesson Description:

Continuation of the ideas from Graphing 11: More examples showing how to find the slope of a line passing through two points by using the algebraic formula for slope. This is part 12 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 use the formula m = (y2 - y1)/(x2 - x1) to find slope between two points?
  • How do you find the slope of the line containing the pair of points (8, -5) and (-3, -2)?
  • What is an easy way to make sure that you are putting values in the correct spots when using the slope formula?
  • What is the slope between the points (5, -7) and (5, 2)?
  • What happens if you get an undefined slope for a line?
  • How do you find the slope between the points (18, -11) and (40, 5)?
  • How do you know whether to expect a positive or negative slope when you find the slope between two points?
  • What is the slope between the points (-1, -3) and (1, 5)?
  • How do you find the slope between two points without graphing them?
  • How do you find the slope of the line containing the pair of points (-4, -3) and (2, -3)?
  • What happens if you get a slope of 0 for a line?
  • Staff Review

    • Currently 4.0/5 Stars.
    This video continues from the previous video and does many more example problems of finding slope between two points. All steps are explained and a really cool technique is shown in which you place y / x for both pairs to make sure they line up correctly in the formula.
  • starshell

    • Currently 5.0/5 Stars.
    really helpful Thanks i passes my first math test this year!!!!
  • xGavyn

    • Currently 5.0/5 Stars.
    Super helpful,my teacher always made it sound like Calculus.