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Mathematics 19 Online
OpenStudy (anonymous):

. Identify the domain and range of the relation. {(-9, 2), (-4, 2), (3, 2), (9, 2)}

OpenStudy (zzr0ck3r):

domain is the set of x's range is the set of y's

OpenStudy (zzr0ck3r):

So the domain is \(\{-9,-4,3,9\}\)

OpenStudy (zzr0ck3r):

what is the range? Note that in a set we do not repeat elements..

OpenStudy (zzr0ck3r):

@dwatts158 ?

OpenStudy (anonymous):

yes 2,2,2,2

OpenStudy (zzr0ck3r):

you need to put them in set brackets because range is a set of values not just the values listed and we don't double list elements in a set, so it would be \(\{2\}\) Make sense?

OpenStudy (anonymous):

oh ok. (2,2,2,2)

OpenStudy (anonymous):

wait {2,2,2,2}

OpenStudy (zzr0ck3r):

no

OpenStudy (zzr0ck3r):

this is the third time I will say it. WE DONT LIST ELEMENTS TWICE IN A SET. The range is \(\{2\}\) that's the answer

OpenStudy (zzr0ck3r):

:)

OpenStudy (anonymous):

ok thank you.

OpenStudy (zzr0ck3r):

that looks a lot harsher than I mean it to be

OpenStudy (zzr0ck3r):

lol

OpenStudy (anonymous):

I understand. :)

OpenStudy (zzr0ck3r):

technally you could have said that because they are the exact same thing \(\{2,2,2,2,2\}=\{2\}=\{2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2\}\)

OpenStudy (zzr0ck3r):

but your teacher wont like it...

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