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22 April, 13:13

Which statement best describes the first step of solving the given system of equations by graphing? 3x-y=4 x+y=-4

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  1. 22 April, 16:35
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    When graphing equations, if the equations are parallel, they cannot be solved.

    The next step is to determine what to multiply one equation so that when the equations are added, one unknown cancels out and you are left with just one unknown.

    3x-y=4

    x+y=-4

    In this case if we add both equations, the "y"'s cancel out and we are left with:

    4x = 0

    so x = 0

    and y = - 4
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