Problem
Solution
For this case we need to verify if each value of x have just one value of y defined or no
For this case we have the following points:
(x=1,y=-2)
(x=1,y=3)
For the same value of x we have different values of y. So then we can conclude that the relation is NOT a function
and the dommain would be given by:
-2 , -1 , 1
Options: A, B, D