System of equations problem?

What is 3x-y=-11, x+2y=8

as an augmented matrix?

3 Answers

Relevance
  • 6 months ago

    3x - y = -11

    3x + 11 = y

    3x - 24 = -6y

    35 = 7y

    y = 5

    x = -2

  • sepia
    Lv 7
    6 months ago

    3x - y = -11

    x + 2y = 8

    7x = -14

    x = -2

    y = 5

  • alex
    Lv 7
    6 months ago

    Matrix AX=B

    with

    A = [3 -1]

           [1 2]

    X = [x]

           [y]

    and

    B=[-11]

         [8  ]

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