College Algebra / Unit 3 Alg 143 short lesson, about 20 seconds
The Slope Formula
Captions available
The idea
The slope formula computes rise over run from coordinates: m = (y₂ − y₁)/(x₂ − x₁) for any two points on the line.
In practice
Through (1, 2) and (4, 8): m = (8 − 2)/(4 − 1) = 6/3 = 2.
Where people slip
Subtract in the same order upstairs and down.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
- Nothing. This is a starting point.
Unlocks
- Nothing yet depends on this.
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