Behaviour being used: Adaptive mode
Minimum fraction: 0
Question summary: Find the vertex, focus, directrix, and focal width of the parabola. y2 = 16x: Vertex: (0, 0); Focus: (0, 4); Directrix: y = -4; Focal width: 4; Vertex: (0, 0); Focus: (4, 4); Directrix: x = 4; Focal width: 64; Vertex: (0, 0); Focus: (4, 0); Directrix: x = -4; Focal width: 64; Vertex: (0, 0); Focus: (4, 0); Directrix: x = -4; Focal width: 16
Right answer summary: Vertex: (0, 0); Focus: (4, 0); Directrix: x = -4; Focal width: 16
Question state: todo