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Nathaniel
Nathaniel asked in Science & MathematicsMathematics · 7 years ago

Algebra 2 System of Equations help.?

Are you able to solve a system of equations without graphing?

If so then how?

Thanks for your time :)

2 Answers

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  • Rita the dog
    Lv 7
    7 years ago

    To solve

    x+y = 8

    x-y = 2

    add the two equations together and get

    2x=10, so x=5. Plug that into either equation and get y=3.

    This idea can be generalized to n linear equations in n unknowns.

    Then it is called Gaussian elimination.

  • Roger the Mole
    Lv 7
    7 years ago

    There are three major methods of solving simultaneous equations that are usually taught in algebra courses:

    substitution, elimination, and matrix methods (including Gaussian elimination).

    The search engines can find all three. None of them require graphing.

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