Question

What is the equation of the quadratic graph with a focus of (4, −3) and a directrix of y = −6?

f(x) = negative one third x squared plus four x minus four

f(x) = one sixth x squared minus four thirds x minus eleven sixths.

f(x) = three fiftieth x squared plus eleven twenty fifth x plus three fifth

f(x) = two fiftieth x squared plus eleven twenty fifth x plus two fifth

Answer 1

is the 6 negative?

Answer 2

yes