Algebra 1 · Quadratic Functions
Vertex
Algebra 1 · Quadratic Functions
Definition
The vertex is the highest or lowest point of a parabola, where it changes direction.
Teach it
Where it is taught, with guided notes, practice, homework, an exit ticket and an interactive Teacher Deck.
Examples
- y = x2 has vertex (0, 0).
- y = (x − 2)2 + 1 has vertex (2, 1).
Key rule
The vertex is the maximum or minimum point of the parabola.
Memory hook
Vertex = the turning point, top or bottom.