Algebra 1

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Help me please.

y=2x
x+y=0

im working on solving systems by graphing. I don't know how slope work yet, right now we working on x and y intercepts. I'm Lose please help

  • Algebra 1 -

    use 2 x for y

    x + 2x = 0
    3 x = 0
    x = 0
    y = 0
    ======================
    to graph
    first one
    when x = 0, y = 0, so through origin (0,0)
    pick another x
    when x = 1, y = 2 so through (1,2)
    draw that line
    second one
    when x = 0, y = 0, so through origin (0,0)
    when x = 1, y = -1, so through (1,-1)
    draw that line.
    They cross, sure enough, at (0,0)

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