Select either relation (if the set is a relation but not a function), function (if the set is both a relation and a function), or neither (if the set is not a relation). input -1 0 -1 -8 9 output 0 1 2 4 8 function relation neither

Relation.

Step-by-step explanation:

This is a relation but not a function. The input -1 maps to both 0 and 2; this is a one-to-many relation  so it is not a function. Functions are either one-to-one or many-to-one.

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step-by-step explanation:

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hey! so 1 (25) out of 4 (100) is 25 so your answer is 25%. it's like quarters!