The slope of the trend line is -7.2. This means that for every additional hour spent on social media, the average final grade is expected to decrease by 7.2 points.
If a student spent 0 hours on social media, the average final grade would be 98.9 points (from the y-intercept of the equation). Therefore, the average final grade would decrease by 7.2 points for every additional hour spent on social media.
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 slope. How many points does the average final grade decrease for 0 hour on social media?(1 point)
3 answers
try again
Apologies for the mistake in my previous response. Let's try again:
The slope of the trend line is -7.2. This means that for every additional hour spent on social media, the average final grade is expected to decrease by 7.2 points.
If a student spent 0 hours on social media (x=0), the equation would simplify to y=98.9. This means that the average final grade for a student who spent 0 hours on social media is 98.9 points.
Therefore, if a student spends 0 hours on social media, the average final grade does not decrease at all. It is expected to stay at 98.9 points.
The slope of the trend line is -7.2. This means that for every additional hour spent on social media, the average final grade is expected to decrease by 7.2 points.
If a student spent 0 hours on social media (x=0), the equation would simplify to y=98.9. This means that the average final grade for a student who spent 0 hours on social media is 98.9 points.
Therefore, if a student spends 0 hours on social media, the average final grade does not decrease at all. It is expected to stay at 98.9 points.