2 years ago

Identifying functions

1 answer:

5 0

Answer:

If all possible vertical lines will only cross the relation in one place, then the relation is a function. This works because if a vertical line crosses a relation in more than one place it means that there must be two y values corresponding to one x value in that relation.

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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Its symbol is σ (the Greek letter sigma)

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2 years ago

Y=2x-10 substitution <br> Y=4x

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X=5
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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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2 years ago

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Answer:

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Step-by-step explanation:

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