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Math Help - Graphing systems of equations?

  1. #1
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    Graphing systems of equations?

    I'm graphing systems of equations...and I am not sure how to do this math problem...y = x squared + 4x +1 and -3x + y= -1 so far I've got -3x+x squared minues x squared plus 4 x plus 1 because I distributed the y = in -3x+y = -1 what should I do next, please help! Any tips would also be helpful. thanks.

    Directions: Solve the following systems of equations algebraically using either the substitution method or elimination method..
    Last edited by Laura901; August 5th 2008 at 07:22 AM.
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  2. #2
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    I am not sure how to do this math problem...y = x squared + 4x +1 and -3x + y= -1
    y = x^2 + 4x + 1

    -3x + y = -1
    solve for y ...
    y = 3x - 1

    use the method of substitution ...

    3x-1 = x^2 + 4x + 1
    0 = x^2 + x + 2

    since b^2 - 4ac < 0, the last equation has no real solution ... in other words, the graphs of the original parabola and line do not intersect.
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