**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?

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