Respuesta :

4. Substitute for y
x+(2x+2)=-3
3x+2=-3
3x=-5
x=-5/3

Plug the x value in
y=2(-5/3)+2
y=-10/3+2
y=-4/3

Final answer: B

5. 3x+4=3x+7. There are no solutions since they are parallel (same slope) but different y intercepts (not coinciding).