# 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

1. 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.

2. 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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