Question

Which of the following lists of ordered pairs is a function?

A. (9, 4), (5, 0), (1, -4), (-2, -6)
B. (9, 4), (5, 0), (5, 3), (-2, -6)
C. (1, 2), (0, 3), (1, 4), (6, 5)
D. (4, 2), (4, -2), (9, 3), (16, 4)

Answer 1

If I may help?

Answer 2

yes please

Answer 3

@3mar

Answer 4

Well, I am here.

With my pleasure!

Answer 5

ok

Answer 6

Are you familiar with vertical line test?

Answer 7

yes i seen some

Answer 8

Which one of them the single x-value has more than one y-value?

Answer 9

i believe A

Answer 10

am i correct

Answer 11

Correct. but do you know why?

Answer 12

Vertical Line Test is a test use to determine if a relation is a function. A relation is a function if there are no vertical lines that intersect the graph at more than one point.

Answer 13

yes cause A have two negatives numbers on the right side in the parenthesis

Answer 14

I think the reason is there is not duplicate for y-values corresponding to a single x-value!

Answer 15

Did you get it?

Answer 16

@chycora

Answer 17

sorry my mom wanted me

Answer 18

yes thank you

Answer 19

Thank you for the medal!
Thank you for learning!

Answer 20

Any more questions?

Answer 21

yes i'll make another post