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Determine where each relation is a function if it is a function then indicate if it is a linear function

Determine where each relation is a function if it is a function then indicate if it-example-1

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It is a function.
This is because each x value only has 1 corresponding y value.

It is not linear. The difference between y values from each incrememnt of x is inconsistent. The first 3 increase by 0 but the last one increases by 1.
User Jim Jarnac
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