Your teacher surveyed the class to determine the number of hours that each student spend on social media your teacher created a table and scatterplot graph that display 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 slope. How many points does an average final grade decrease for one hour on social media?
The slope of the trend line, given by the equation y = -7.2x + 98.9, represents the rate of change of the average final grade (y) with respect to the number of hours spent on social media (x).
In this case, the slope is -7.2. This means that for every one hour increase in the time spent on social media, the average final grade decreases by 7.2 points.
So, an average final grade decreases by 7.2 points for each additional hour spent on social media.