There are three ways to solve systems of linear equations: substitution, elimination, and graphing. Substitution will have you substitute one equation into the other; elimination will have you add or subtract the equations to eliminate a variable; graphing will have you sketch both curves to visually find the points of intersection.

Read MoreThe most important thing to remember about graphing lines is that you always need some combination of the slope of the line, and/or points on the line in order to graph it.

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