If it si proportional y/x=k or y=kx if k is same throuout, then it is proportional find their ratio so 0/0=undefined, ignore 2/3=k 4/6=2/3=k 6/9=2/3=k yes, proportional
y=kx 3=2k 1=2/3k 2/3 is answer
proprtional (2nd and 3rd) graph is proprtional, first table is poroprtional other ones are not 2nd picture is proportional, 3rd is not
(x,y), y is rise, x is run unit rate is rise/run=15/6=5/2=2.5 unit rate is 2.5
unit rate is (1/2)/(2/5)=(1/2)(5/2)=5/4=1.25 unit rate is 1.25
