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 in the trend line equation represents the point at which the line crosses the y-axis, which is the point where x is equal to 0. In this case, the y-intercept is 98.9, which means that if a student did not spend any time on social media (0 hours), their average final grade percentage would be 98.9.
To determine the average final grade if a student spent 10 hours on social media, we can substitute x=10 into the trend line equation:
y = -7.2(10) + 98.9
y = -72 + 98.9
y = 26.9
Therefore, if a student spent 10 hours on social media, their average final grade percentage would be approximately 26.9.