Why is this a non-proportional relationship?

proportional relationship

Step-by-step explanation:

For equal increments in the value of x, the difference in the y- values are constant, that is

40 - 25 = 55 - 40 = 70 - 55 = 85 - 70 = 15

This indicates the data in the table is proportional

δabc ≅ δdcb by sas because

db ≅ ac . . given (side)

bc ≅ bc . . reflexive property (side)

∠dbc ≅ ∠ acb . . alternate interior angles where transversal bc crosses parallel lines bd and ac (included angle)

how many friends does he have? i think some of the information got cut off in the problem.