Respuesta :

mayarsakir

Answer:

3 and 4

Step-by-step explanation:

3) 1=-(-1)

1=1

0=0

4) 0=0

when both sides are equal means it is true.

ghanami

Answer:

Step-by-step explanation:

hello : (-1 ; 1)   because when x=-1   y = -(-1) =1