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friendzone
 one year ago
Which set is a function?
A)
{(0,3), (3,0), (0,4), (4,0)}
B)
{(0,2), (2,0), (4,6), (6,4)}
C)
{(2,6), (3,6), (4,6), (2,0)}
D)
{(6,2), (2,0), (4,6), (6,4)}
friendzone
 one year ago
Which set is a function? A) {(0,3), (3,0), (0,4), (4,0)} B) {(0,2), (2,0), (4,6), (6,4)} C) {(2,6), (3,6), (4,6), (2,0)} D) {(6,2), (2,0), (4,6), (6,4)}

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ybarrap
 one year ago
Best ResponseYou've already chosen the best response.1Notice that a function has only one yvalue for every x value. So look at your options, are there any duplicates for the same x value? The one where there are no duplicates in the yvalue for every xvalue is your function.

ybarrap
 one year ago
Best ResponseYou've already chosen the best response.1For example, (0,4) and (0,6) is not a function because if I give you a 0 you can't choose whether to give me a 4 or a 6. While (1,2) and (2,3) IS a functions because if I ask you for a 1 you give me a 2 and if I ask you for a 2 you give me a 3. The yvalues are unique in functions.

ybarrap
 one year ago
Best ResponseYou've already chosen the best response.1I'll give you another example, {(6,2), (2,0), (4,6), (6,4)} I give you a 6, what do you give me a 2 or a 4? Is this a function?
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