A scatterplot shows the relationship between the number of hours a person spends exercising per week, , and their resting heart rate in beats per minute, . A line of best fit is drawn, and it has a negative slope. Which of the following statements best describes the meaning of the slope of the line of best fit in this context?
For every additional hour of exercise per week, the resting heart rate increases by the value of the slope.
For every additional hour of exercise per week, the resting heart rate decreases by the absolute value of the slope.
The resting heart rate is always negative.
The number of hours exercised per week is always negative.
