Pre-Cal!
a)9y^2-x^2+36y+6x+18=0
b)x^2+9y^2-4x-72y+139=0

find the: center, vertices, foci, main axis.
How would I go about solving this? Can anyone help and explain how what to do? Im not sure what I'm doing and OS is my last hope! D:

Question

Pre-Cal!
a)9y^2-x^2+36y+6x+18=0
b)x^2+9y^2-4x-72y+139=0

find the: center, vertices, foci, main axis. 
How would I go about solving this? Can anyone help and explain how what to do? Im not sure what I'm doing and OS is my last hope! D:

anonymous · Answer

http://braingtest.ck12.org/skills/107052/learn Just watch the video and you can solve it yourselves