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Step-by-step explanation:

1). Unit rate = slope of the graph at x =1

   Unit rate means value of y at x = 1

   From the graph of the given function,

   (1, 2) is the point which defines the unit rate.

2). Table (1),

   If the data shows the proportional relationship,

   Therefore, table (1) represents the proportional relationship.

   Table (2),

   If the data given in table is proportional,

   Which is not true.

   Therefore, table (2) doesn't show the proportional relationship.

step-by-step explanation:

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