1. which of the following lines of best fit represent the data if x is the number of days since the plant appeared and y is the height of the plant? a. y = –3.5x + 0.7 b. y = –0.7x + 3.5 c. y = 0.7x + 3.5 d. y = 3.5x + 0.7 2. explain why your choice of equations best fits the data. explain what the slope and y-intercept of the line of best fit mean about the bamboo plants. part c use the line of best fit chosen in part b to predict the height of a bamboo plant 40 days after appearing above the soil. show your work.