Posted by amaa on .
Find the vertices, foci and eccentricity of the ellipse.Thank you
9x^2 + y^2 = 81

math 
Reiny,
divide by 81
x^2/9 + y^2/81 = 1
then look at my reply to your other post for the same kind of question
http://www.jiskha.com/display.cgi?id=1354265681 
math 
amaa,
thanks I got it right.