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    Hello, i need help with my maths homework and i'm hoping that somebody would be of assistance to me.

    Okay the 1st question is:

    Calculate the coordinates of the points of intersection of the graphs which have equations
    x+ 2y = 5 and xy = 3

    I got (-1,-3) and (6,1/2) as my answers. Is this correct?


    The 2nd question is:
    Solve the simultaneous equations 3x + y =7, x(2x+ 3y) = 0.

    For some reason i can't do that question, i need help :P
    Thanks.
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    (Original post by Cainyy)
    Hello, i need help with my maths homework and i'm hoping that somebody would be of assistance to me.

    Okay the 1st question is:

    Calculate the coordinates of the points of intersection of the graphs which have equations
    x+ 2y = 5 and xy = 3

    I got (-1,-3) and (6,1/2) as my answers. Is this correct?


    The 2nd question is:
    Solve the simultaneous equations 3x + y =7, x(2x+ 3y) = 0.

    For some reason i can't do that question, i need help :P
    Thanks.
    You can check whether your answers for q1 are correct by putting them in back to the two equations - you'll notice that both sets of coordinates satisfy xy=3 but neither satisfy x+2y = 5.

    For q2, make either x or y the subject of one equation and work from there. (3x + y = 7) sounds easier to work with.
 
 
 
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