1. Graphing Quadratic Functions
Honors Algebra II with Trigonometry
Mrs. Stacey

2. Essential Stuff Essential Question Essential Vocabulary
How do you graph quadratic functions?
Essential Vocabulary
Quadratic Function
Vertex
Standard Form

3. Quadratic Functions Standard Form: y = ax2 + bx + c
The graph of a quadratic equation is a parabola.

4. Quadratic Functions Vertex: The highest or lowest point on a parabola
Axis of symmetry:
Divides the parabola
into mirror images and
passes through the vertex

5. Quadratic Functions
Every point on a parabola (except the vertex) has a corresponding point the same distance from the axis of symmetry.

6. Graphs of Quadratics Graphing quadratics from standard form…
Identify axis of symmetry: x = – b_ 2a
Identify vertex using axis of symmetry
Find a point on parabola and use symmetry to find another point (i.e., y-intercept)
Examples

7. Homework 4.1: Graphing from Standard Form