Graphing 11 - Formula for slope
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Errors in this video:
There is an error, which is corrected, around the 7 1/2 minute mark where the slope should be positive 3/4.
Lesson Description:
Covers the algebraic formula used to find the slope of a line passing through two points. More examples are in the next video, Graphing 12. This is part 11 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 find the slope between two points by graphing them and using rise/run?
- How do you find the slope between (-3, 2) and (2, -1)?
- What is the formula for finding slope between two points?
- Does it matter what order you subtract the coordinates when finding slope?
- Does it matter which point is which when calculating (y2 - y1)/(x2 - x1)?
- How do you find the slope of the line passing through (4, -6) and (8, -3)?
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Staff Review
In this video, you will learn how to find the slope of a line if you only have two ordered pairs or points. This time, it is not necessary to use a graph. Finding slope by using the formula for slope between two points is shown and used.
