algebra

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Select the ordered pair from the choices below that is a solution to the following system of equations:
4y = x - 13
2x + 16y = 20

  • algebra -

    Write 1st Eq in STD form:
    x - 4y = 13
    2x + 16y = 20
    Multiply 1st Eq by -2:
    -2x + 8y = -26
    2x + 16y = 20
    Add the 2 Eq:
    24y = -6
    y = -1/4
    Substitute -1/4 for y in the 1st Eq
    and solve for x:
    x - 4(-1/4) 13
    x = 12.

    (12 , -1/4).

  • algebra -

    3x + 4y = -12
    6x + 8y =-16

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