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    Sarah_Marie's Avatar
    Sarah_Marie Posts: 24, Reputation: 1
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    #1

    Oct 27, 2010, 07:21 AM
    assistance solving linear systems
    For what value of “b” will the line y=-2x+b be tangent to the parabola y=3x^2+4x-1 ?
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Oct 27, 2010, 09:07 AM

    1. Equate both equations.
    2. Use the fact that for the new curve that you got to have equal roots,

    Now, can you tell me why is that so, since you didn't posted your attempt?
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