What is the equation of the quadratic graph with a focus of (2, − 2) and a directrix of y = 0? (1 point) Select one: a. f(x) = −one fourth (x − 2)2 − 1 b. f(x) = −one fourth (x − 2)2 + 1 c. f(x) = −one fourth (x − 2)2 d. f(x) = one fourth (x − 2)2 + 1