Question

Which of the following relations is NOT a function?
A.(-7, 4), (4, 3), (-3, 1), (6, 2)
B.(-3, 4), (4, 2), (6, 1), (-7, 5)
C.(6, 4), (-3, 2), (4, 1), (-7, 2)
D.(4, 4), (-3, 2), (4, 1), (-7, 2)
I think B or C.

Answer 1

@Michele_Laino

Answer 2

I think B

Answer 3

I'm sorry, option B is a wrong option

Answer 4

ok it's fine so C?

Answer 5

a function \( x \rightarrow y=f(x)\), by definition, is a relation between two variables, such that for each value of \(x\) there is one and \(only\) one value \(y=f(x)\). So the same \(x\) can not have more than one \(y\). What can you conclude?

Answer 6

I can conclude that there should be a relation between x and y

Answer 7

So it's not B or c

Answer 8

It should be A or D correct?

Answer 9

all your options represent a relation between \(x\) and \(y\). Please look at the option D