anonymous
  • anonymous
are the ordered pairs(-2,-1),(-1,0)(6,3) and (-2,-1) a function?
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
what is the domain and range
Mertsj
  • Mertsj
A function is a set of ordered pairs in which no two ordered pairs have the same first number. So is it a function?
anonymous
  • anonymous
no

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Mertsj
  • Mertsj
Good job. The domain is the set of x values and the range is the set of y values.
anonymous
  • anonymous
help me understand that im a little confused on that part
Mertsj
  • Mertsj
Do you know which is the x value of an ordered pair and which is the y value?
anonymous
  • anonymous
yea the first number in the pair is x second is y
Mertsj
  • Mertsj
So what are the x values of your ordered pairs?
anonymous
  • anonymous
-2,-1,6,-2
Mertsj
  • Mertsj
So put them in order (don't list any number twice), put braces around them and that's your domain.....the set of x values. Do the same with the y values and that will be the range.
anonymous
  • anonymous
so i dont put -2 twice??
Mertsj
  • Mertsj
Did you see where I typed not to list any number twice?
anonymous
  • anonymous
lol yea just wanted to be sure this is very important to my grade right now
Mertsj
  • Mertsj
{-2,-1,6} That's the domain.
anonymous
  • anonymous
thanks a bunch you rock
Mertsj
  • Mertsj
yw. Don't forget to do the range.
anonymous
  • anonymous
will do

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