Your teacher surveyed the class to determine the number of hours that each student spent on social media. Your teacher created a table and scatterplot graph that displayed the number of hours and the average final grade based on the hours. The trend line (equation) for the data is y=−7.2x+98.9 . Interpret the slope. How many points does the average final grade decrease for 1 hour on social media?(1 point)
The slope of the trend line, -7.2, represents the rate of change in the average final grade for each hour spent on social media.
Therefore, for every 1 hour spent on social media, the average final grade decreases by 7.2 points.