If variables x and y are directly proportional and y=2 when x=3. what is the value of y when x=9

3:2=1,5

X is 1,5 times bigger than y

Y*1,5=9
Y=9:1,5
Y=6

No a triangle cannot be formed because when you add the two smallest number together (which would be 11) the have to be bigger than the number it is "against" ( which would be 12)