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 y -intercept. What is the average grade if a student was on social media for 0 hours?(1 point)
1 answer
The y-intercept of the trend line equation is 98.9. In this context, the y-intercept represents the average grade a student would have if they spent 0 hours on social media. Therefore, if a student did not spend any time on social media (0 hours), their average grade would be 98.9.