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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.
Math Planet
Math Planet: The Graph of Y = Ax^2 + Bx + C
A nonlinear function that can be written on the standard form ax^2 + bx + c,where a is not = 0, is called a quadratic function. All quadratic functions hava a U-shaped graph called a parabola.
Khan Academy
Khan Academy: Graph Quadratics in All Forms
Graph quadratic functions given in any form. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Math Planet
Math Planet: Algebra 2: How to Graph Quadratic Functions
Gain an understanding of how to graph quadratic equations by viewing an example and a video lesson.
CK-12 Foundation
Ck 12: Algebra: Quadratic Functions and Their Graphs
[Free Registration/Login may be required to access all resource tools.] Learn the anatomy of the graph of a quadratic function.
Khan Academy
Khan Academy: Graph Quadratics in Standard Form
Graph quadratic functions given in the standard form a squared+bx+c. For example graph y=5x squared-20x+15. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Cool Math
Coolmath: Making the Connection Between Graphing and Solving
Description and examples of the connection between solving and graphing quadratics.
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.
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...
CK-12 Foundation
Ck 12: Algebra: Use Square Roots to Solve Quadratic Equations
[Free Registration/Login may be required to access all resource tools.] This lesson covers solving quadratic equations using square roots.
CK-12 Foundation
Ck 12: Analysis: Graphs of Quadratic Functions
[Free Registration/Login may be required to access all resource tools.] Students review of quadratic function graphing methods. Students examine guided notes, review guided practice, watch instructional videos and attempt practice problems.
Cool Math
Coolmath: Graphing Parabolas Part 2
Find out how to graph parabolas in this second tutorial.
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.
Other
Algebra.com: Quadratic Equation Solver
An interactive solver for quadratic equations shows solutions using several methods, including graphing and the quadratic formula.
CK-12 Foundation
Ck 12: Factor Quadratics: Methods for Solving Quadratic Functions
[Free Registration/Login may be required to access all resource tools.] A review of the three major methods of solving quadratic functions for "x" intercepts.
Math Is Fun
Math Is Fun: Real World Examples of Quadratic Equations
Provides examples of how quadratic equations can be used in real-world scenarios, and the different methods used to solve them.
CK-12 Foundation
Ck 12: Algebra: Identification of Quadratic Models
[Free Registration/Login may be required to access all resource tools.] This lesson covers fitting a data set to a quadratic equation.
Khan Academy
Khan Academy: Features of Quadratic Functions: Strategy
Identify the form of a quadratic function that immediately reveals a given feature of that function. Features in question are the y-intercept of the graph, the zeroes ("roots") of the function, and the vertex of the parabola. Students...
Lawrence Hall of Science
The Math Page: Topics in Pre Calculus: Quadratics
Here is a site that clearly and thoroughly explains quadratic functions, including graphing functions and solving equations using factoring. There are example problems solved, problems for the student to attempt, and answers to the...
Cool Math
Coolmath: Graphing by Completing the Square How
Explore and understand graphing by completing the square.
CK-12 Foundation
Ck 12: Algebra: Factorization of Quadratic Expressions
[Free Registration/Login may be required to access all resource tools.] Learn how to factor quadratic expressions.
Texas Education Agency
Texas Gateway: Determining the Domain and Range for Quadratic Functions
Students will explore how to determine the domain and range for quadratic functions. Students will use graphs, videos, and online activities to complete the tutorial.
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