# Parametric Equation

## Parametric Equation

Equation in which the solutions can be expressed as functions of parameters.

### Examples

• The equation Ax² + Bx + C = 0 is a parametric equation.
Its solutions are $$x_1=\dfrac {-B+\sqrt {B^{2}-4AC}} {2A}$$et $$x_2=\dfrac {-B-\sqrt {B^{2}-4AC}} {2A}$$.
• The equation y = mx + 12 is a parametric equation with a parameter m.
• The equation xy = k is a parametric equation with a parameter k.