You 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 hours. The trend line (equation) for the data is y = 7.2x + 98.9. Interpret the slope. How many points does the average final grade decrease for 1
hour spent on social media?
hour increase in social media usage?
The slope of the trend line, y = 7.2x + 98.9, represents the rate of change in the average final grade based on the number of hours spent on social media.
In this equation, x represents the number of hours spent on social media and y represents the average final grade.
The slope of 7.2 means that for every additional hour spent on social media, the average final grade decreases by 7.2 points.