Using a directrix of y = 5 and a focus of (4, 1), what quadratic function is created?

Using a directrix of y = 5 and a focus of (4, 1), what quadratic funct

1.	Using a directrix of y = 5 and a focus of (4, 1), what quadratic function is created?
Answer» Using a directrix of y = 5 and a focus of (4, 1), what quadratic function is created? Solution: