Posted by **Anonymous** on Thursday, October 17, 2013 at 4:33pm.

input 1 2 3 4 5 6 7

output5 9 13 17

- math -
**Steve**, Thursday, October 17, 2013 at 5:55pm
judging from what I see, we have the output increasing by 4 when the input increases by 1.

so, look for something like

y = 4x

Since 5=4+1, I'd try

y = 4x+1

That seems to work.

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