Question

Which of the following does not represent a function?

x 8 7 9 5 2
y 2 4 5 −5 4

x 2 5 6 5 2
y 1 2 3 4 5

x −4 −5 −6 −7 −8
y 4 5 6 7 8

x 0 2 3 4 8
y 1 3 5 4 7

Answer 1

@SAm_1234 a function is a relation such that for each x there, is a unique value of y.
For example
x 1 2 3 4
y 0 2 2 3
Here we can see for each x there is only one value of y, so this is a function
x 1 2 1 3
y 0 2 2 3
here for x=1, there are two different values of y, 0 and 2
so it's not a function
Do you get this?

Answer 2

No

Answer 3

@SAm_1234 which part you don't get?

Answer 4

All of it

Answer 5

A function is a relation such that for each x there is only one output y
Example
for x=1, we'll have only one y value say 2
it can't be more than 1
if for x=1, we have two values of y=2, 3
then it's not a function
Do you get this?

Answer 6

@SAm_1234 ?

Answer 7

Yes

Answer 8

Yes I do thank you very muck Goku

Answer 9

@SAm_1234 so which is not a function?

Answer 10

B.

Answer 11

good work :D

Answer 12

Thanks you to