math

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Can you help me answer this question?
I have no idea how to do this...
1. Is (2,3) as solution of the system
3x +4y = 18
2x - y =1?

  • math -

    3x+4y=18
    you just plug in 2 and 3..
    3(2)+4(3)=18
    6+12=18
    18=18
    so yes, (2,3) is the solution for the first problem.

    2x-y=1
    again, plug in 2 and 3..
    2(2)-1=1
    4-1=1
    3=1
    so no, it's not the solution for the problem

    hope I helped!

  • math -

    wait, number two is wtong.. sorry!!

    2. 2x-y=1
    plug in 2 and 3..
    2(2)-3=1
    4-3=1
    1=1
    so yes, (2,3) is the solution to the problem

    ((:

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