Which is the equation of a hyperbola with directrices at y = ±2 and foci at (0, 6) and (0, −6)? x squared over 12 minus y squared over 24 equals 1 x squared over 12 minus y squared over 48 equals 1 y squared over 12 minus x squared over 24 equals 1 y squared over 48 minus x squared over 12 equals 1