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Homework Help: Distance between vertices

  1. Jul 14, 2010 #1
    1. The problem statement, all variables and given/known data
    Determine the distance D between the vertices of -9x^2+18x+4y^2+24y-9=0

    2. Relevant equations

    3. The attempt at a solution
    This is an online problem that my calc2 instructor gave us. I can't find anything in my book of this level of difficulty. Any help would be appreciated.
  2. jcsd
  3. Jul 14, 2010 #2


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    Science Advisor
    Homework Helper

    hi muddyjch! :smile:

    (try using the X2 icon just above the Reply box :wink:)

    have you tried to complete the square to find the centre of the hyperbola?
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