Interactive Mathematics
Interactive Mathematics: Find Equation of a Quadratic Function From Its Graph
A detailed explanation of how to find a quadratic equation from its graph using different methods, including using software.
Concord Consortium
Concord Consortium: Graphing Quadratic Equations
Students learn to graph the equation of a quadratic function using the coordinates of the vertex of a parabola and its x-intercepts.
CK-12 Foundation
Ck 12: Interactive Geometry: 10.3 Equations of Parabolas
Learn about equations of parabolas.
Purple Math
Purplemath: Graphing Quadratic Functions: Introduction
The most basic quadratic is y = x2. The general technique for graphing quadratics is the same as for graphing linear equations. The quadratics graph as curvy lines (called "parabolas"), rather than the straight lines generated by linear...
Purple Math
Purplemath: Conics: An Overview
Introduces the basics of conics in algebra, including a flow-chart for determining which sort of conic is represented by a given equation.
Concord Consortium
Concord Consortium: Quadratic Functions in Vertex Form
Given the equation of a quadratic function in vertex form, students learn to identify the vertex of a parabola from the equation, and then graph the parabola.
Concord Consortium
Concord Consortium: Quadratic Word Problems Part 1
Students solve two problems involving the motion of projectile objects, modeled using quadratic equations. They then graph parabolas and use the graphs to answer questions about projectile objects, and identify the maximum heights of the...
Texas Education Agency
Texas Gateway: Analyzing Graphs of Quadratic Functions
Given the graph of a situation represented by a quadratic function, the student will analyze the graph and draw conclusions.