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Thread: Hyperbola doubt?

  1. July 21st 2009, 11:27 AM #1
    mj.alawami
    mj.alawami is offline
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    Exclamation Hyperbola doubt?

    Reduce the equation 9x^2-4y^2-36x+16y-16=0 into standard form and identify weather the hyperbola is on the x axis (opens from the left and right) or the y axis (opens up and down).

    Attempt:
    I have reduced it into
    \frac{(x-2)^2}{4}-\frac{(y-2)^2}{9}=1

    & I guess it opens on the x axis.

    Am I correct?
    Thank you
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  2. July 21st 2009, 12:57 PM #2
    Soroban
    Soroban is offline
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    Hello, mj.alawami!

    Absolutely correct . . . Good work!
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