We have an expression that relates scores (y) and homework hours (x).
The expression is:

If we know that y=88, it means that the quiz score was 88. We can estimate how many hours of homework correspond to this score by replacing y with 88 in the equation and solve for x:

When y=88, x has a value of 3.33, meaning that, to get that score of 88, the amount of hours of homework were 3.33 hours according to the relation find by the math teacher.
Answer: x=3.33 hours of homework, correspond to a score of 88, according to the linear relation.