PART A: KNOWLEDGE AND UNDERSTANDING Multiple Choice. Place the appropriate answer in the space provided. 1 mark each. i . Which of the following is a direction vector for the line with Cartesian equation 2x 53! + 7 = 0? a. E = (5,2) b. a = (2,5) c. E = (1014) a. E = (215) 2. Which value of A: will make the lines F = (1,?) + 503) s E R, and 12:: + ky = 0 parallel? a. 8 b. l8 c. 8 d.18 3. Let L1 be the line with vector equation F = (1, 7) + s(2,5), s E R. Let L2 be the line with parametric equations x = 10: + 3. y = 4t + 12. t E R. l:1 and L2 are: a. parallel b. perpendicular c. coincident d. none of the above 4. What value of it will make the lines % = '7\" = f3 and F = (1, 3, 6) + s(2k, 2, k) perpendicular? a. l b. 3 c. 2 {21.3 5. A plane is defined by the equation 3x 22 = 4y + 1. Determine the normal vector of this plane. a. H: (3,2,4) b. H: (3,4,4) c. a: (3,4,2) a. a: (3,412)