A scatterplot showing a positive correlation between the number of days on the x-axis and the height of a plant on the y-axis, with a line of best fit drawn through the data points. The scatterplot shows the height of a plant, in centimeters, measured daily for 10 days.
A line of best fit is shown, and its equation is , where is the height of the plant and is the number of days since the first measurement. What does the number in the equation represent in this context?
The predicted height of the plant after 10 days.
The predicted initial height of the plant.
The average increase in the plant's height, in centimeters, per day.
The total increase in the plant's height over 10 days.
