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

Question

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)

GPT-4o mini · Answer

The slope of the trend line in the equation \( y = -7.2x + 98.9 \) is -7.2. This slope represents the change in the average final grade (y) for every 1-hour increase in the number of hours spent on social media (x).

Specifically, the interpretation of the slope -7.2 means that for every additional hour a student spends on social media, the average final grade decreases by 7.2 points.