Question

need helpp

Answer 1

It's NOT a function if there's 2 OR MORE y-values for any x-value.
Basically, if there's a repeat of a number in "domain" then it's NOT a function.

Otherwise it would be a function.

Answer 2

The same x cannot match up with two different y values for that x.

In relation A, the 5 elements of the domain all match up with w BUT no single X is matched up with two different values for that x.

Conclusion: Relation A is a function.

Answer 3

@burberry22

On relation 2, do you see a single x that is matched up with two different y values for that x?

Answer 4

The x values are the domain. The y values are the range.

Answer 5

I can help you with this but I need for you to participate.

Look at relation 2 and see what you think the answer is.

Answer 6

i thikn its a function

Answer 7

sooo? relation 2 is a function

Answer 8

@directrix

Answer 9

>> relation 2 is a function Yes

Answer 10

relation 3 is not a function ithink?

Answer 11

Relation 3 has and x of 5 going to both t and w.

You are correct. Relation 3 is not a function.

Answer 12

What is your thinking on relation 4? @burberry22

Answer 13

relation 4 is not a function

Answer 14

You are looking, I think, at the range and seeing where it connects in the domain.

That is not what we need to do.

Look at the x values and see if the same x goes to two different ys for that x.

Answer 15

oh isee what your saying so ralation 4 is a function

Answer 16

and also can you help me with 2 more questions?

Answer 17

x and w are two different domain values going to 7 in the range.

That is okay.

Because the exact same x is not going to two different values for that x.

Answer 18

Relation 4 is a function.

Answer 19

> and also can you help me with 2 more questions?

I will try to help.

Answer 20

relation 1 is not a function?

Answer 21

>> relation 1 is not a function?

Correct.

Answer 22

What about relation 2?

Answer 23

relation 2 would be a relation

Answer 24

>>relation 2 would be a relation

But is it a function or not?

Answer 25

Paper goes to x in the range. Paper also goes to t in the range.

Therefore, relation 2 is not a function. @burberry22

Answer 26

relation 3

Answer 27

is a relation?

Answer 28

I think you meant to post "is a function."

Answer 29

Is relation 4 a function?

Answer 30

nope

Answer 31

@directix

Answer 32

@directrix

Answer 33

Is relation 4 a function?

Yes, it is a function.

The same x is not paired with the same y value for that x. @burberry22

Answer 34

Post the next new problem in a new thread, please. @burberry22