1. Determine vector, parametric and, if possible, symmetric equations for the line through the point (2, 1, 3) with direction vector mi = (4, 2, 5). 2. Determine vector, parametric and, if possible, symmetric equations for the line through the point (-2, 2, 5) and parallel to the line through the points A(2, -3, 4) and B(3, 2, -1). 3. Determine vector and parametric equations for the z-axis. 4. Determine vector and parametric equations for the line with symmetric equations * - 2 y+5 Z - 3 -2 4 5. Determine symmetric equations for the line " = (-2, 3, 0) + t(-1, 1, 2)