math
posted by darian
Which table shows a proportional relationship between x and y?
x 2 4 5 6
y 6 12 18 21
x 1 3 4 5
y 50 150 200 250
x 3 5 7 8
y 1.5 2.5 3 4.5
x 1 2 3 6
y 1.5 3 6 9

Steve
there must be a constant ratio. So, check each pair of terms to be sure it stays constant
x 2 4 5 6
y 6 12 18 21
6/2 = 3
12/4 = 3
18/5 = 3.6
21/6 = 3.5
So, that's not a proportional relationship
Check the other tables. 
PsyDAG
You don't have your tables labeled, so I just copied the right one.
x 1 3 4 5
y 50 150 200 250
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