Parabola
Parabola creates a parabola on the graph and takes a point for the focus and a line for the directrix [[x,y], [[x,y],[x,y]]].
```graph
bounds: [-10, 10, 10, -10]
elements: [
{type: parabola, def: [[2,0], [[-1,4], [-1,-4]]]}
]
```
Parabola creates a parabola on the graph and takes a point for the focus and a line for the directrix [[x,y], [[x,y],[x,y]]].
```graph
bounds: [-10, 10, 10, -10]
elements: [
{type: parabola, def: [[2,0], [[-1,4], [-1,-4]]]}
]
```