Respuesta :

This is a direct variation, since the cost and the number of articles purchases both go up.

Answer:

Direct variation

Step-by-step explanation:

The cost of the number of articles purchased vary with the number of articles purchased.

Suppose the cost of 1 shirt is $12, the cost of 10 shirts = 10 times 12 is 120

The cost of the purchase depends on the number of items purchased

The cost varies directly with the number of items purchased

So its a direct variation

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