Find the equation, f(x) = a(x-h)2 + k, for a parabola that passes through the point (1,-7) and has (2,- 4) as its vertex. what is the standard form of the equation? a. the vertex form of the equation is f(x) = -3(x + 2)2 - 4. the standard form of the equation is f(x) = 3x2 + 12x − 8. b. the vertex form of the equation is f(x) = 3(x + 2)2 + 4. the standard form of the equation is f(x) = 3x2 − 12x −16. c. the vertex form of the equation is f(x) = −3(x - 2)2 −4. the standard form of the equation is f(x) = −3x2 + 12x − 16. d. the vertex form of the equation is f(x) = 3(x + 2)2− 4. the standard form of the equation is f(x) = 3x2 − 12x + 8.