A single equation representing both lines x+y=0 and x+2y = 0 is ? ​

A single equation representing both lines x+y=0 and x+2y = 0 is ?



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  1. Answer:

    The single equation is [tex]y = 0[/tex]

    Step-by-step explanation:

    We are given the following system of equations:

    [tex]x + y = 0[/tex]

    [tex]x + 2y = 0[/tex]

    From the first equation:

    [tex]x = -y[/tex]

    Replacing in the second equation:

    [tex]-y + 2y = 0[/tex]

    [tex]y = 0[/tex]

    The single equation is [tex]y = 0[/tex]

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