The y-intercept of the trend line represents the average final grade a student would have if they spent 0 hours on social media.
In this case, the trend line equation is y = -7.2x + 98.9.
If a student was on social media for 0 hours (x = 0), the equation becomes y = -7.2(0) + 98.9 = 98.9.
Therefore, the average grade for a student who spent 0 hours on social media is 98.9.
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