College Algebra / Unit 6 Alg 325 short lesson, about 20 seconds
Reading the Vertex from Standard Form
Captions available
The idea
In standard form a(x − h)² + k, the vertex is (h, k): the inside names h sign-flipped, the outside names k.
In practice
(x − 2)² − 1 has vertex (2, −1); (x + 3)² + 5 hides h = −3, vertex (−3, 5).
Where people slip
The inside lies the way shifts lie.
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