First to answer will be the brainliest

Table no.3
because proportional between xand y means
x=ky
where k is the constant.
e.g from the no.3 table;
when x= 2.5 and y=5
2.5=5k
k=2.5/5=1/2
when k=1/2 and x=3
3=1/2 ×y
y=3×2=6(as shown in the table no.3