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On your own graph paper, draw axes, decide on a scale, and plot points to represent the data in the table at right. Does this data appear to be proportional? Explain why or why not.



Quantity x, row 1

Quantity y, row 1

Quantity x, row 2

Quantity y, row 2

Quantity x, row 3

Quantity y, row 3

Quantity x, row 4

Quantity y, row 4

Quantity x, row 5

Quantity y, row 5

Remember that a proportional relationship includes a line through and a straight line relating the points.
Does this data have these qualifications?

Use the eTool below to determine if the data is proportional.
Click the link at right for the full version of the eTool: