A parabola is modeled with the equation x2 – 6x + 4y – 19 = 0. Which is the domain and range of the parabola?

D: (–∞, ∞); R: [7, ∞)
D: (–∞, ∞); R: (–∞, 7]
D: (–∞, 7]; R: (–∞, ∞)
D: [7, ∞); R: (–∞, ∞)

Part B: Identify the focus, directrix, and axis of symmetry of the parabola. (6 points)