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Concept

Quadratic Function

A quadratic function is a polynomial function of degree that can always be written in the form with Note that the highest exponent of the independent variable is The graph of any quadratic function is a vertical parabola.
parabola
There are three ways to write a quadratic function.
Name Equation Characteristics
Standard Form and are real numbers, and is the intercept of the parabola.
Vertex Form and are real numbers, and is the vertex of the parabola.
Intercept Form
(also called Factored Form)
and are real numbers, and and are the intercepts of the parabola.