# Linear Equations

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These free videos, study guides and online tools can help you graph, solve, and apply linear equations. Find a resource today to learn more about slope-intercept and point-slope forms of a line, graphing a linear equation, and more.
 Interactive Cartesian Coordinates     This webpage allows you to drag and drop about 10 points onto a cartesian graph and also connects the points as a line segment Math is Fun 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 Fly By Math Simulator     This interactive online tool enables students to simultaneously visualize and manipulate three linked representations of a distance-rate-time problem. The side-by-side tool format features two airplanes (each flying at a constant speed) on merging jet routes, the corresponding distance-vs.-time graphs, and the corresponding linear equations. NASA Online Math Examples     Excellent site showing examples of algebra, trig, calculus, differential equations, and linear algebra. Paul's Online Math Notes Solving a System of Linear Equations     Need help solving systems of linear equations? In this video, a Tutor.com algebra tutor uses the substitution method to solve a system of linear equations, and shows you how to use graphing to make sure you don’t get tricked by systems of parallel lines that have no solution. You’ll graph the linear equations, find their point of intersection, solve them using substitution, and check your work to make sure it all makes sense. Tutor.com Algebra Quiz 2 : Lines, absolute values, polynomials     Quiz on Lines, Absolute Values, and Polynomials SOS Math Algebra Balance Scales - Negatives     Use a virtual balance to solve equations, including those with negative numbers. National Library of Virtual Manipulatives Balance as a Model of an Equation     This article shows how to solve an equation. A physical balance is used as an example. There are drawings that help to illustrate. Homeschool Math Worksheets and Quizzes     Review your math as you progress from one marking period to the next. Edhelper.com