Question

Determine which relation is a function.














A.


{(–4, 3), (–2, 3), (–1, 2), (2, 5), (3, 2)}











B.


{(–4, 1), (–2, 3), (–2, 1), (–1, 5), (3, 2)}











C.


{(–4, 1), (–2, 3), (–1, 2), (3, 5), (3, 2)}











D.


{(–4, 1), (–2, 3), (–1, 1), (–1, 5), (3, 2)}

Answer 1

I can help

Answer 2

First of all, you need to know what a function is.

Answer 3

Do you?

Answer 4

no not really

Answer 5

Ok. To make it quick I will tell you that all the first numbers listed can't repeat. To be a function they all have to be different

Answer 6

You will have to find it yourself. Just check to see if any of the numbers listed first repeat.

Answer 7

it would be c

Answer 8

What's really funny is that I just did this in school within the last few days. where do you go? I go to LSS(Laurel Springs online School)

Answer 9

OVCA(Oklahoma Virtural Charter Academy)

Answer 10

Oh. So both online school. Cool

Answer 11

Now, which one did you find was a function based off of my brief explanation?

Answer 12

C?

Answer 13

The first numbers are your input, the others your output. Think of a function like a vending machine. For each input, there is an output. 3 would give you chips, 2 would give cookies, 4 would give a soda.... Each input value has to have it's own output value. If you have more than 2 of the same inputs, then you would get seperate things. So if you selected for example 5, on a vending machine you could get crackers or something else. Think of a function that way.

Answer 14

Not C, there are 2 threes

Answer 15

Try again. Just focus on the input values

Answer 16

D?

Answer 17

And in a relation, you list the inputs least to greatest. And if a number repeats you write it once. For example if my input values are 3,3, 6,-1, and 0 I would write them as -1,0,3,6. Ok?

Answer 18

No look one more time

Answer 19

b

Answer 20

It listed -1 twicce

Answer 21

*twice

Answer 22

No, A. Your input values in A were 14, -2, -1, 2, 3. None repeated. You want to write them out to check so you can see if any repeat

Answer 23

*-4 not 14

Answer 24

but B could be the only one because youou said earlier the a was not going to be it

Answer 25

no

Answer 26

When?

Answer 27

Because A is defiantly the answer. I knew that the whole time so I wouldn't have said it isn't

Answer 28

Ok. To make it quick I will tell you that all the first numbers listed can't repeat. To be a function they all have to be different

Answer 29

But in A they all are different and I never said in that post that A wasn't

Answer 30

Oh you might have been looking at the output values in the others...

Answer 31

Only the input values, the numbers written before the comma, matter when seeing if a relation is a function