1. Which is a direction vector of the line through (1,2,3) and (4,0,6)?
- A. (5,2,9)
- B. (3,−2,3)
- C. (3,2,3)
- D. (1,2,3)
2. Find the Cartesian equation of r=(1,0,2)+λ(3,4,5).
- A. 3x−1=4y=5z−2
- B. 3x+1=4y=5z+2
- C. 1x−3=0y−4=2z−5
- D. 3(x−1)=4y=5(z−2)
3. Which point lies on r=(2,1,0)+λ(1,−1,2)?
- A. (5,−2,5)
- B. (5,2,6)
- C. (5,−2,6)
- D. (3,2,2)
4. A line has Cartesian equation x=3, 2y−1=5z+2. A direction vector is
- A. (3,2,5)
- B. (0,2,5)
- C. (1,2,5)
- D. (3,1,−2)
5. Which line is parallel to r=(1,2,3)+λ(2,−4,6)?
- A. r=(1,2,3)+μ(2,4,6)
- B. r=(2,−4,6)+μ(1,1,1)
- C. r=(0,0,1)+μ(−1,2,−3)
- D. r=(0,0,1)+μ(1,2,3)