42. Which of the following are the values of x and ythat minimize the objective function for this system of constraints? 3x5y x+2y59; P=x+2y le;y21 2 2 43. What steps would you use to plot (-3, -4, 0) in a 3-dimensional coordinate system? a. From the origin, move back 3 units and down 4 units. b. From the origin, move back 3 units and left 4 units. c. From the origin, move down 3 units and left 4 units. d. From the origin, move back 3 units and up 4 units. 44. What are the x-, y-, and z-intercepts, respectively, of the plane determined by the equation x + 2y+ z: 5? 5 a. 5, 5, and 2 5 b. -,5,and5 2 5 c. ,5,and5 2 5 d. 5, , and5 2