In which set of ordered pairs X Y is not a function of x

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the code is 545454

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for ex: the reciprocal of 3/4 is 4/3. it is the opposite.

reciprocal definition:

a mathematical expression or function so related to another that their product is one; the quantity obtained by dividing the number one by a given quantity.

the answer is: the length is 5/6 yards.

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step-by-step explanation: