In this context, the y-intercept of the trend line represents the average final grade of a student who spends 0 hours on social media. According to the equation y = -7.2x + 98.9, where x is the number of hours spent on social media, when x = 0, the equation becomes y = -7.2(0) + 98.9. Simplifying this equation yields y = 98.9.
Therefore, if a student spends 0 hours on social media, the average final grade is 98.9.
your teacher surveyed the class to determine the number of hours that each student spend on social media. your teach created a table and scatterplot graph that displayed the number of hours and the average final grade based in 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?
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