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OpenStudy (anonymous):

Which method is not used to find the solution of a system of linear equations. a. guess and check b. graphing c. substitution d. matrices

OpenStudy (kat_s123):

Guess and check. Graphing can be used to solve every linear equation, substitution is the way that most people learn to solve them along with elimination. Matrices are set up with systems of linear equations. Guess and check could be used, but it would take forever, and it's not accurate because you'd have to guess and check every answer for both equations.

OpenStudy (kat_s123):

By the way, you posted this in English :P

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