Question

question attached in comments

Answer 1

Relation 1 is not a function because k has two different output values

Answer 2

For a relation to be a function each input value must have one output value.

Answer 3

Are you following me? Do you understand?

Answer 4

Yes :) sorry for the late reply, i was switching classes

Answer 5

Take a look at the first relation. K has two output values: sun and tree. So its not a function.

Answer 6

actually, the website where i had the question just logged me out, so i lost the question. can i ask for your help on a different one?

Answer 7

sure

Answer 8

here it is! thanks

Answer 9

The same question? You want to know which ones are functions?

Answer 10

nevermind

Answer 11

yes, i'm really confused

Answer 12

Take a look at relation one. Does each value in the domain have one value in the range?

Answer 13

those are different than the first picture

Answer 14

yes, so it's a function, right?

Answer 15

yes

Answer 16

that one is simple, but what about the other ones?

Answer 17

Now take a look at relation 2. You have (-2 , C) and ( -2 , k)

Answer 18

You have the same Domain value (-2), but two different range values (C) and (K)

Answer 19

The domain is your input and the range your output. For a relation to be a function each input must have one output. So is relation 2 a function?

Answer 20

no, it's not.

Answer 21

correct

Answer 22

What do you think about relation 3?

Answer 23

okay cool! let me try the other ones myself, and tell me if i'm correct.

Answer 24

neither of the last two are functions.

Answer 25

correct

Answer 26

okay, thank you so so much!