Question

HELP FOR MEDAL AND FAN!

Which of the sets of ordered pairs represents a function?

A = {(3, −5), (4, 6), (−3, 9), (2, 7)}
B = {(2, 4), (−1, −7), (5, 6), (4, 3)}

Only A
Only B
Both A and B
Neither A nor B

Answer 1

the ones where the first numbers do not repeat

Answer 2

D right?

Answer 3

hmmm no

Answer 4

then i dont know cuz your not explaining it!

Answer 5

i don't know how else to say it
if there are repeats in the first coordinates, like say \((2,3),(2,7)\) then NO, not a function
if all the first numbers are different, i.e if there are no repeats, then YES a function

Answer 6

c?

Answer 7

do you see any repeated numbers in the first coordinates here \[ A = \{(3, −5), (4, 6), (−3, 9), (2, 7)\}\] or are all the first numbers different?

Answer 8

yeah C

Answer 9

Here is what you need to do cat

Answer 10

i already got it so just please dont