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Cisco was looking at a table of values from a silent board game of . She said, “This table contains , so I think it shows a proportional relationship.” Is Cisco correct? Why or why not?

Proportional relationships do contain the point , but is she sure that the graph makes a straight line or that the table has points with corresponding ratios?

Examine the graph of to the right.
Why is Cisco incorrect?

A parabola.