A scatterplot shows the relationship between the number of hours a student studied for a test, , and their score on the test, . A line of best fit is given by the equation .
What does the number 5 represent in the context of the scatterplot?
The predicted score for a student who did not study.
The maximum possible score on the test.
The average increase in test score for each additional hour studied.
The number of hours a student needs to study to get a score of 60.
