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Math Help - maximum and minimum point

  1. #1
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    maximum and minimum point

    it is given that y=(0,k) and (-3,11) are points on y=p-(x+n)^2 -show that the graph of fuction, where p and n are constant.find the value of p ,n ,and k


    someone help
    Last edited by CaptainBlack; November 6th 2009 at 09:21 AM.
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  2. #2
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    maximun and minimum point

    diagram shows part of the graph of the function y=p-(x+n)^2,where p and n are constants.find the value of

    a)p,
    b)n,
    c)k
    Attached Thumbnails Attached Thumbnails maximum and minimum point-untitled.bmp  
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  3. #3
    Senior Member I-Think's Avatar
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    You're already half-way there mate. It's in the form y=a(x+d)^2+e, so to determine the turning, let (x+d)=0, and you'll determine the x-coordinate and y coordinate of the turning point of the parabola, compare with the graph to get the values of n and p.
    Now set x=o, which sets y=k, from graph and substitute the values of n and p and you'll get your the value of k.
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