Statistics problem

Based on data below, If a student spends 3.5 hours on Facebook per week what would you expect their GPA to be? Do you consider your prediction to be accurate and why?
x= facebook hours per week Y=GPA
1.0 3.2
1.5 2.9
2.0 3.2
2.2 2.9
5.0 2.5
5.5 2.0
6.0 2.2
7.5 2.1