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Mathematics 7 Online
OpenStudy (freemap):

Please help me

OpenStudy (anonymous):

whats the question?

OpenStudy (freemap):

Which relation is a function? A. {(1, 2); (1, 3); (1, 4); (1, 5)} B. {(1, 2); (2, 3); (3, 4); (4, 5)} C. {(1, 2); (2, 3); (3, 4); (2, 5)} D. {(1, 2); (3, 2); (3, 3); (4, 2)}

OpenStudy (anonymous):

i think d

OpenStudy (freemap):

how come?

Directrix (directrix):

@sydneymmelin I think that D is not correct. (3, 2); (3, 3) The same x is mapped to two different y-values for that x.

OpenStudy (anonymous):

oh a bc the have the same

OpenStudy (anonymous):

and they all have ones but different numbers

OpenStudy (freemap):

oh okay so you much the ones thats not the same

Directrix (directrix):

Option A cannot be correct: {(1, 2); (1, 3); The same x is mapped to two different y values.

OpenStudy (anonymous):

so what u are saying is that they cant be different

Directrix (directrix):

How about this: B. {(1, 2); (2, 3); (3, 4); (4, 5)}

OpenStudy (freemap):

I see that the x have to connect to 1? or

OpenStudy (anonymous):

oh so they have opossite but yet the same oh i get it now

OpenStudy (freemap):

wait like there two 4s

OpenStudy (anonymous):

yea they are opposite tho

Directrix (directrix):

But, those 4s you see are not both x values. We don't care what the y values are doing; just the x values.

OpenStudy (freemap):

oh I get, wow I understand that

OpenStudy (freemap):

Thanks so much for all the help. I get it thanks

Directrix (directrix):

That is good news.

OpenStudy (anonymous):

yea thx direct

OpenStudy (freemap):

I also wanna thank you to, all the help

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