Help ;( Im suppose to fill in something on the small boxes on the left.

Answer:
X: 8, 7.5, 7, 6.5, 6, 5.5, 5, 4.5, 4, 3.5
Y: 5, 4.5, 4, 3.5, 3, 2.5, 2, 1.5, 1, 0.5
Step-by-step explanation:
This is a straight, constant, proportional relationship line.