## anonymous 5 years ago Find the vertices, foci and eccentricity of the ellipse. 9x^2 + y^2 = 81

1. anonymous

Rewrite it in standard form.

2. anonymous

You don't need me when you have polpak :)

3. anonymous

$\frac{(x-h)^2}{a^2} + \frac{(y-k)^2}{b^2} = 1$

4. anonymous

You should divide both sides by 81, you will have: ${x^2 \over 9}+{y^2 \over 81}=1$

5. anonymous

Then rewrite 9 and 81 as the square of a and b, then you know the lengths of the major and minor axes.