Posted by **Abbey(Please help)** on Monday, May 3, 2010 at 1:49pm.

Find the center, vertices, foci, and eccentricity of the ellipse.

9x^2 + 4y^2 - 36x + 8y + 31 = 0

My answer was:

center=(2,1)

v=(-2,10)(-2,-10)

f=(-2,11)(-2,-11)

e=11/3

Where did I make a mistake?

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