What sets of ordered pairs is a function of Set A to Set B, if set A =x,y,z and set B = -4, -2,0,2,4

Question

problem involves sets of ordered pairs What sets of ordered pairs is a function  from set A to set  B?

 

SET A = x,y,z     SET B = -4, -2, 0, 2, 4

I could not find the symbol that denotes a set.

Answer 1

There are few ways to set up this function, for example: (x,-4),(y, -2), (z, 0)