Nakeisha's math teacher plots student grades on their weekly quizzes against the number of hours they say they study on the pair of coordinate axes and then draws
the line of best fit. What does the line's y-intercept represent?
100
95
90
85
80
75
Quiz Score
70
o
60
56
50
45
0.5
1
1.5 2
4
5-5
6
2.5 3 3.5 4-55
Time Spent on Homework per Week (hours)