Graphing parabolas for given quadratic functions
Topic Notes
In this lesson, Dennis will show us how to look for the y-intercept, x-intercept and vertex of a parabola from its general form and then sketch the parabola.
Basic Concepts
- Quadratic function in general form: y = ax^2 + bx + c
- Quadratic function in vertex form: y = a(x-p)^2 + q
- Converting from general to vertex form by completing the square
- Shortcut: Vertex formula