1. Dr. Claude S. Moore Cape Fear Community College
Precalculus Algebra
Quadratic
Functions
Dr. Claude S. Moore Cape Fear Community College

2. Polynomial Function
A polynomial function of degree n is where the a’s are real numbers and the n’s are nonnegative integers and an  0.

3. a, b, and c are real numbers and a  0.
Quadratic Function
A polynomial function of degree 2 is called a quadratic function.
It is of the form
a, b, and c are real numbers and a  0.

4. Axis of Symmetry For a quadratic function of the standard form
gives the axis of symmetry.

5. axis of symmetry: x = h vertex: (h, k)
Standard Form
A quadratic function of the form
is in vertex form.
axis of symmetry: x = h vertex: (h, k)

6. Characteristics of Parabola
vertex: maximum
vertex: minimum
a < 0