Question

how to determine if a set of values is a function?

Answer 1

lets take an example :-
Given Set is :- 0,2,4,6,8,10,12

So we can write it as :-
\[\large \bf x=[{x:x~is~even \space ~NATURAL~number~where ~x \le 12}]\]

Answer 2

hope you understand? @lyssaaaa

Answer 3

yes i get it but i need to write it in sentence form

Answer 4

this form is a sentence form

Answer 5

no like in general not an example :(

Answer 6

oh! i get it

Answer 7

Remember:- Function of any set does not repeat .
OR you can say that f(x)=y is a function if for every input (x) there is a unique output(y).

Like :-
the sets are (1,2),(3,4),(5,6) and (7,8)


If you have this:-
(2,3),(3,5),(2,8) and ((5,9)