# Functions

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 Early Edge: Number Families     In this Early Edge video lesson, you'll learn more about Number Families, so you can be successful when you take on high-school Math & Arithmetic. The Princeton Review Early Edge: Two-Step Equations     In this Early Edge video lesson, you'll learn more about Two-Step Equations, so you can be successful when you take on high-school Math & Algebra. The Princeton Review Domain of a function     In this video, Salman Khan of Khan Academy shows you how to find the domain of a function. Khan Academy Functions Part 4     In this video, Salman Khan of Khan Academy explains functions. Part 4 of 4. Khan Academy Functions Part 3     In this video, Salman Khan of Khan Academy explains functions. Part 3 of 4. Khan Academy Online Math Examples     Excellent site showing examples of algebra, trig, calculus, differential equations, and linear algebra. Paul's Online Math Notes Symmetry of Graphs     Gives a detailed description of different types of symmetry of a function using equations and graphs. Shows the student also through another link how to determine if a function is odd or even. The Math Page The FOIL method     Explains how to use the FOIL method of multiplying. Algebrahelp.com Worksheets and Quizzes     Review your math as you progress from one marking period to the next. Edhelper.com Standard form of a parabola     Standard form of a parabola and vertex equations Standard form of a parabola