For problems 1 – 4 give the vector for the set of points. Find its magnitude and determine if the vector is a unit vector.
1. The line segment from (?9,2)(?9,2) to (4,?1)(4,?1).
2. The line segment from (4,5,6)(4,5,6) to (4,6,6)(4,6,6).
3. The position vector for (?3,2,10)(?3,2,10).
4. The position vector for (12,??32)(12,?32).
5. The vector ?v=?6,?4,0?v?=?6,?4,0? starts at the point P=(?2,5,?1)P=(?2,5,?1). At what point does the vector end?