Kenneth S. answered 03/22/16
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The graph shows the number of pictures a traffic camera takes each minute. ⇐ That's the given Statement of Fact.
So (8,4) must mean that, in the eighth minute, 4 pictures were taken. I don't think that any of the possible answers are very good.
It would be nice to see the graph that is under discussion but I realize that's practically impossible. I suspect this question is one of the recent products of the "Common Core" revolution, of which I am not a fan.
Alan G.
03/22/16