High School

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70 points.


Select the correct answer.

Which relation is a function?

(Look at the photo)


Option D didn’t fit in the photo, so here’s it typed out.


x | y

10 15

20 25

8 30

20 35

70 points Select the correct answer Which relation is a function Look at the photo Option D didn t fit in the photo so here

Answer :

Answer:

A is a function.

Step-by-step explanation:

All the others are one-to-many relations.

For example in B, 3 maps to 10 and also maps to 30 ( one - to - many).

A function is a one-to-one or many-to-one mapping.

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Rewritten by : Barada

Answer:

  • Option A

Step-by-step explanation:

Options B, C and D have repeat x-values with different y-values.

The relationship is many-to-one.

If graphed, those point appear on a vertical line.

Option A has one-to-one relation, so is the only functional relationship