Using a directrix of y = -3 and a focus of (2, 1), what quadratic function is created?

Using a directrix of y = -3 and a focus of (2, 1), what quadratic func

1.	Using a directrix of y = -3 and a focus of (2, 1), what quadratic function is created?
Answer» Using a directrix of y = -3 and a focus of (2, 1), what quadratic function is created? Solution: