Question

Which of the following relations is not a function?
A (9, 4), (-4, 2), (4, 1), (-7, 2)

B (4, 4), (-4, 2), (4, 1), (-7, 2)

C (-4, 4), (4, 2), (9, 1), (-7, 5)

D (-7, 4), (4, 3), (-4, 1), (9, 2)

Answer 1

in order to be a function x's values shouldn't repeat

Answer 2

in order pair (x,y)
first value is x and 2nd is y
so just look at the x values
if there is same x values more than once then relation is not a function

Answer 3

let me know if you didn't understand :)

Answer 4

there are multiple choices where X does not repeat

Answer 5

u have to find "relation which is not a function"

Answer 6

if there are x's values repeating then its not a function

Answer 7

Here are the choices:
(9, 4), (-4, 2), (4, 1), (-7, 2)

(4, 4), (-4, 2), (4, 1), (-7, 2)

(-4, 4), (4, 2), (9, 1), (-7, 5)

(-7, 4), (4, 3), (-4, 1), (9, 2)

Answer 8

Only the second one has a repeat X

Answer 9

yes that's mean............

Answer 10

again -->"if there are x's values repeating then its not a function"

Answer 11

so which one is ur answer ??

Answer 12

I got it now, thanks.

Answer 13

so your ansawer is ??

Answer 14

B

Answer 15

there u go :)