# Constructing the Cartesian Parabola

- Author:
- Gary Rubinstein

- Topic:
- Parabola

Move the vertex of the parabola (the green point) up and down to see the construction of the trident. The n slider controls the shape of the moving parabola. The b slider controls where on the x-axis the rotating line passes through. The a slider controls how far above the vertex the rotating line passes through.