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Mathematics 8 Online
OpenStudy (anonymous):

What are the vertices of the hyperbola given by the equation y2 – 9x2 + 22y – 72x – 32 = 0?

OpenStudy (mertsj):

Oh boy. They gave us a hard one, didn't they?

OpenStudy (amistre64):

lol, just some completing square is all

OpenStudy (anonymous):

What do I do?

OpenStudy (mertsj):

Yep

OpenStudy (mertsj):

First of all note that the y^2 term is positive so this hyperbola will open up and down. Remember that?

OpenStudy (anonymous):

yea i do

OpenStudy (mertsj):

So now that we know that, get that 32 out of the way by adding it to each side.

OpenStudy (mertsj):

Do you know how to complete the square?

OpenStudy (anonymous):

I found a video on this so I am gonna go ahead and watch it

OpenStudy (mertsj):

Good for you. Way to take the initiative.

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