Flashcard 7 - Math Flashcard Set for the ACT

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The correct answer is:

substitution: solving one equation for x or y and substituting its value into the other equation to solve for one variable, then plugging this value into either equation to solve for the other variable.
elimination: manipulating the equations so that adding the first equation to the second will eliminate one of the variables so that the second variable can be solved for
graphing: graphing both equations and finding their point of intersection


Explanation:

Lines that do not intersect have no solution.
Lines that intersect once have one solution.
Lines that are the same have infinite solutions.

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