College Algebra / Unit 3 Alg 145 short lesson, about 20 seconds
Slope-Intercept Form
Captions available
The idea
Slope-intercept form writes a line as y = mx + b, where m is the slope and b is the y-coordinate of the y-intercept.
In practice
y = 2x − 1 announces itself: slope 2, y-intercept (0, −1), no plotting required.
Where people slip
The b is a coordinate, not a point by itself.
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.
Something wrong in this lesson? Flag it · Sources for College Algebra