Question

can someone check my answer ?

Which of the sets of ordered pairs represents a function? (5 points)

A = {(1, −5), (8, −5), (8, 7), (2, 9)}
B = {(7, −4), (7, −2), (6, −3), (−9, 5)}


Only A
Only B
Both A and B
Neither A nor B-my answer

Answer 1

Function: When each x-value has a different y-value

Answer 2

like what do you mean different

Answer 3

Example:

you have the function:

(1,-1) (2,-2) (3,-3)

that's a function

NOT a function:

(1,-1) (1,-2) (3,-3)

why is it not a function? because there is x = 1 twice and both have different y-values : -1 and -2

Answer 4

im confused

Answer 5

look at the first function

any x values are repeated?

Answer 6

no

Answer 7

are you sure? i see 8 twice for x. . .

Answer 8

no my new answer is yes

Answer 9

oke so A can't be a function cuz 8 is there twice but the y-values are different

how about B?

Answer 10

maybe

Answer 11

any x values repeating?

Answer 12

yes

Answer 13

7

Answer 14

so can't be a function either

Answer 15

so my answer was correct

Answer 16

ye

lol I just saw that you already chose an answer

Answer 17

thank you

Answer 18

yw :)