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 percentage.
based on the hours. the trend line for the data is y = 7.2x + 98.9 Interpret the y intercept what is the average final grade if a student spent 10 hours on social media
The y-intercept of the trend line represents the average final grade percentage when a student spends zero hours on social media. In this case, the y-intercept is 98.9, which means that a student who spends zero hours on social media would have an average final grade of 98.9%.
To determine the average final grade if a student spent 10 hours on social media, we can substitute x = 10 into the equation for the trend line:
y = 7.2(10) + 98.9
y = 72 + 98.9
y = 170.9
Therefore, if a student spent 10 hours on social media, their average final grade would be approximately 170.9%.