anonymous
  • anonymous
i dont understand funtions please help Which ordered pairs in the form of (x,y) does not represent a funtion of x? (-1,2),(3,2),(0,1),(5,2) (-1,2),(3,2)(-2,2),(0,2) (1,2),(3,2),(0,1),(3,5) and (-1,2),(2,3),(3,-2),(-2,0)
Mathematics
chestercat
  • chestercat
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Mehek14
  • Mehek14
what kind of functions?
anonymous
  • anonymous
(-1,2),(3,2),(0,1),(5,2) -1,2/3,2/-2,2/0,2 1,2/3,2/0,1/3,5 and -1,2/2,3/3,-2/-2,0
anonymous
  • anonymous
can you explain how i would solve this

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Mehek14
  • Mehek14
I don't understand ur question
anonymous
  • anonymous
those four sets are the ordered pairs they gave me in (x,y) form im to find which set does not represent a function of x
anonymous
  • anonymous
(-1,2),(3,2),(0,1),(5,2) (-1,2),(3,2)(-2,2),(0,2) (1,2),(3,2),(0,1),(3,5) and (-1,2),(2,3),(3,-2),(-2,0)
Mehek14
  • Mehek14
hm you might want to tag some people
anonymous
  • anonymous
im new on here i wouldnt know to to tag
anonymous
  • anonymous
who to tag
Mehek14
  • Mehek14
just put the @ sign
Mehek14
  • Mehek14
there are many people online
anonymous
  • anonymous
but to who is the question i dont know who to @
Mehek14
  • Mehek14
go to the home page of mathematics and on the right you will see all the people online tag them
anonymous
  • anonymous
anonymous
  • anonymous
thanks @Mehek14
jim_thompson5910
  • jim_thompson5910
Look for sets of points that have repeated x values to find the non-function. Example: { (5,7), (5,8), (10,19), (12,27) } The x coordinate x = 5 pops up more than once, so this relation isn't a function.
anonymous
  • anonymous
so to find the answer for my question i would only have to find the x the repeats?
jim_thompson5910
  • jim_thompson5910
yes
anonymous
  • anonymous
so c would be the answer?
anonymous
  • anonymous
(1,2),(3,2),(0,1),(3,5) this one?
jim_thompson5910
  • jim_thompson5910
yep it's (1,2),(3,2),(0,1),(3,5) since x = 3 shows up twice
jim_thompson5910
  • jim_thompson5910
A function must produce exactly one output for any given input. With the input of 3, we ask ourselves "what is the true output? 2? or 5?". Since we don't know for sure we just say it's not a function
anonymous
  • anonymous
thanks so much you explain that better than my teacher could you help with a few more? like explain them to me?
jim_thompson5910
  • jim_thompson5910
sure I can help

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