I would say a but not 100% sure.
Y=kx, k is not equal to 0
when y=32,x=3, 32=3k
k=32/3
so y=32/3*x
when y=15, 15=32/3*x
x=45/32
If a=c and b=c then a=c this is transitive property
So 3/5 of 20 is what
'of' means multiply
3/5 of 20 means
3/5 times 20/1=(3*20)/(5*1)=60/5=12/1=12
12 pack a lunch
They're both functions because each input has exactly one output
