anonymous
  • anonymous
How do I list the elements of the domain as a set and the elements of the range as a set? Also, is it a relation or a function? {(1,2), (2,4), (3,6), (4,8)}
Algebra
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
Ok first do you know what the domain is?
anonymous
  • anonymous
nope
anonymous
  • anonymous
Ok the domain is a list of all x-values, so here what are they.

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anonymous
  • anonymous
I think I need to just youtube the session on this all together lol
anonymous
  • anonymous
ok this is easy just hang on
anonymous
  • anonymous
you can do this
anonymous
  • anonymous
{(1,2), (2,4), (3,6), (4,8)} {(x,y), (x,y), (x,y), (x,y)}
anonymous
  • anonymous
does that make sense?
anonymous
  • anonymous
kind of
anonymous
  • anonymous
do I add the x's together and the y's together?
anonymous
  • anonymous
so the first number in the coordinate is an x-value and the second number is a y-value. No we are not adding
anonymous
  • anonymous
We are first finding the domain: all x-values: {1,2,3,4} Do you see how I got this?
anonymous
  • anonymous
yes those are all of the xs
anonymous
  • anonymous
wait, so that's it? there is no more work to it?
anonymous
  • anonymous
ok, what do you do once you've found the domain and the y values?
anonymous
  • anonymous
awesome now the range: all the y-values: {2,4,6,8}
anonymous
  • anonymous
ok so so far we have: domain: {1,2,3,4,} range: {2,4,6,8} Now we need to determine whether it is a relation or a function
anonymous
  • anonymous
ok, so how do you do that? because for some reason I want to say it is a function...
anonymous
  • anonymous
A function is a set of ordered pairs in which each x-element has only ONE y-element associated with it. So none of the x-values can be the same. So is this a function? Let's see if you can figure this out..
anonymous
  • anonymous
We look at the domain, are any of those numbers the same?
anonymous
  • anonymous
the numbers in the domain are not the same but the ones in the range are, right?
anonymous
  • anonymous
ok, no that is not what we are looking for. to determine if it is a function, all we have to do is see if any of the x-values are the same, here are the x-values {1,2,3,4,} are any of them the same?
anonymous
  • anonymous
I want to say 2 and 4 are but that's not right
anonymous
  • anonymous
lol are any of the numbers physically the same? it is simple 1, 2, 3, 4 are any of those numbers the same number?
anonymous
  • anonymous
oh lol im not smart. No, none of them are the same
anonymous
  • anonymous
awesome so that means that this is a function: so this is what we have- domain: {1,2,3,4} range: {2,4,6,8} relation or function: function
anonymous
  • anonymous
thanks for putting up with me haha
anonymous
  • anonymous
lol no problem
zzr0ck3r
  • zzr0ck3r
every function is a relation, not every relation is a function So this is a function AND a relation.

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