(12 points) Consider the vector u between (-4, -2,-5) and (-4, 4, 9). 1. The vector U is 2. The length of U is 3. If the tail of u is at (1, -2, 1), then the tip is at 4. If the tip of u is at (4, 0, 0) then its tail is at 5. What vector has the same length as u, but points in the opposite direction? 6. What vector has the same direction as u, but is twice as long