The y-intercept of the trend line, also known as the constant term, represents the value of y (average final grade) when x (number of hours on social media) is 0.
In this case, the y-intercept is 98.9. Therefore, if a student was on social media for 0 hours, the average grade is expected to be 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?
2 answers
its wrong