43. Which of the following would represent the tangent line segment through the point (0, 0) on the direction field of the differential equation y' = r + y? a. b. C. d. 1 44. Which of the following would represent the tangent line segment through the point (1, 1) on the direction field of the differential equation y' = ry? a. + b. C. d. t 45. A direction field is given below. Which of the following represents its differential equation? a. y'=x2 b. y' = 1 c. y' = yz d. y' =12+ yz 46. A direction field is given below. Which of the following represents its differential equation? a. y' = 12 b. y' = 1 c. y' = yz d. y' =x2 + yz