Algebra I on Khan Academy: Algebra is the language through which we describe patterns. Think of it as a shorthand, of sorts. As opposed to having to do something over and over again, algebra gives you a simple way to express that repetitive process. It’s also seen as a “gatekeeper” subject. Once you achieve an understanding of algebra, the higher-level math subjects become accessible to you. Without it, it’s impossible to move forward. It’s used by people with lots of different jobs, like carpentry, engineering, and fashion design. In these tutorials, we’ll cover a lot of ground. Some of the topics include linear equations, linear inequalities, linear functions, systems of equations, factoring expressions, quadratic expressions, exponents, functions, and ratios.

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In this lesson, students review the basic idea of what it means to solve a system of inequalities. Students then learn how to determine the solution set of a system of inequalities by finding where the two solution sets intersect. For a copy of the worksheet used in this video click on: http://www.emathinstruction.com/sitebuildercontent/sitebuilderfiles/CCAlgIU5L7SolvingSystemsOfInequalities.pdf