Question

Please help just number 4 (:

Answer 1

what is the question

Answer 2

I just am not sure how to do it

Answer 3

But what is the qquestion? :P

Answer 4

Oh you can't see the picture??

Answer 5

The question is determine whether each relation is a function. Find the domain and range

4.{(4,5),(1,5),(3,8),(4,6),(10,12)}

Answer 6

a relation is a function if it has one x for every y. that means we can't have repeated x values. do we?

Answer 7

in other words,
each first coordinate (x) is different ,it is called a function

Answer 8

Yes there is so its not a function correct?

Answer 9

exactly

Answer 10

Thank you (: and how do I find the domain and range?

Answer 11

domain=set of all first co-ordinates

Answer 12

range= set of all second co-ordinates

Answer 13

So add all the x values?

Answer 14

And then add all the y values? Or do I multiply

Answer 15

no,write all first co-ordinates separate with commas

Answer 16

can u write

Answer 17

All I have to do is write the x values and the y values? That's so easy what the heck lol

Answer 18

show ur work

Answer 19

Domain : 4,1,3,4,10
Range:5,5,8,6,12

Answer 20

no repeats, as far as I know

Answer 21

no

Answer 22

Oh so don't put 2 of the same numbers correct?

Answer 23

D={1,3,4,10} no,element repeated in a set

Answer 24

Therefore

Domain: 4,1,3,10
Range: 5,8,6,12

Answer 25

get it
write range and show

Answer 26

very good

Answer 27

It matters what order they r in?

Answer 28

least to greatest

Answer 29

order is not not important

Answer 30

for our convenience we write in order

Answer 31

put { }

Answer 32

is it clear

Answer 33

Okay thank you very much!

Answer 34

welcome