A botanist collected data on the growth of sunflowers to maturity. She modeled the equation y = x + 12

for the line of best fit. The independent variable, x, is time in weeks and the dependent variable, y, is height in feet. What does the slope mean in this context?

The sunflower's starting height is 1 foot.

The sunflower's height increases by an additional 1 half-foot each week,

The sunflower's height increases by an additional 1 foot each week.

The sunflower's starting height is half foot

The slope of the line of best fit, which is 1, represents the rate of increase in height per week. Therefore, the correct answer is: The sunflower's height increases by an additional 1 foot each week.