**Problem : **
Is the major axis of the following ellipse horizontal or vertical:
+ = 1
?

**Problem : **
Find
*a*
,
*b*
, and
*c*
of the ellipse
+ = 1
.

**Problem : **
Find
*a*
,
*b*
, and
*c*
of the ellipse
9*x*
^{2} +3*y*
^{2} - 36*x* - 6*y* + 12 = 0
.

**Problem : **
Find the vertices of the ellipse
2*x*
^{2} +3*y*
^{2} - 6 = 0
.

**Problem : **
What is the eccentricity of the ellipse
81*x*
^{2} + *y*
^{2} - 324*x* - 6*y* + 252 = 0
?

**Problem : **
What is the center and radius of the circle
*x*
^{2} + *y*
^{2} - 8*x* - 16*y* + 60 = 0
?