Math

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Could someone please help me with this. I am confused. Math is a weak point for me.
Solve the system of equations by graphing. Then classify the system. 9x-6y=30, 6x-9y= -30. The solution is? Consistent or inconsistent, dependent or independent?
How would I graph this?
Thanks.

  • Math -

    9x-6y=30, 6x-9y= -30
    divide everything by 3

    3x - 2y = +10 multiply by 3
    2x - 3y = -10 multiply by 2

    9x - 6y = +30
    4x - 6y = -20 now subtract
    -----------------
    5 x = 50
    x = 10

    20 - 3y = -10
    3 y = 30
    y = 10

    straight lines
    intersection at (10,10)
    slope of first = 9/6 = 1.5
    slope of second = 2/3 = .6667
    first hits y axis at -5 and x axis at 10/3
    second hits y axis at 10/3 and x axis at -5

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