Quadratic Functions

Standform: ax^2 + bx + cy^2 + dy + e=0
An equation where A=C, it a circle.
Example: 2x^2 +2y^2 = 16



An equation where A=C=0 is an example: 4x^2 + 8y +6

An equation where A or C has opposite signs is a
hyperbole
Example: 2x^2 - 2x^2 = 8


An equation where A=C and Signs are the same, is an ellipse.
Example: 3x^2 + 4y^2 = 16