anonymous
  • anonymous
PLEASE HELP!! which set of ordered pairs in the form (x,y) does not represent a function of x? A{(-1,2),(3,-2),(0,1),(5,2)} B. {(-1,2),(3,2),(-2,2),(0,2)} C. {(-1,2),(3,-2),(0,1),(3,5)} D. {(-1,2),(2,3),(3,-2),(-2,0)}
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
pick the one where there is a repeat in the first coordinate
anonymous
  • anonymous
if the first coordinates of each ordered pair are all different,then it is a function if the first coordinates have repeated numbers, then it is not
anonymous
  • anonymous
so is it A

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anonymous
  • anonymous
it says "does NOT" represent a function the first coordinates in A are \(\{-1,3,0,5\}\) and since they are all different is IS a function so no, not A
anonymous
  • anonymous
is it clear what i mean by "there are repeats in the first coordinate"?
anonymous
  • anonymous
theres a repeat in b right?
anonymous
  • anonymous
list the first coordinates of B
anonymous
  • anonymous
(-1,2), (3,2),(-2,2)(0,2)
anonymous
  • anonymous
i see it is not clear what i mean, that is why i asked the first coordinates are the first numbers of each ordered pair
anonymous
  • anonymous
you listed 4 ordered pairs just list the first numbers of each
anonymous
  • anonymous
clear or no?
anonymous
  • anonymous
no im still confused
anonymous
  • anonymous
\[(\color{red}{-1},2), (\color{red}3,2),(\color{red}{-2},2)(\color{red}0,2)\] the first coordinates are in red
anonymous
  • anonymous
okay
anonymous
  • anonymous
do you see any red numbers repeated?
anonymous
  • anonymous
i hope the answer is "no" they are all different, so this one IS a function find the one where there is a repeat in the first coordinates
anonymous
  • anonymous
um i think it might be D im not sure
anonymous
  • anonymous
i don't see any repeats in D check C
anonymous
  • anonymous
oh i see now there is a repeat in c

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