can someone check this i'm really lost i thought i had it and now i don't think i do. Solve the system by graphing x+y=3,x+y=-1
x+y=-1
x-x+y=-1-x
y=-1-x
y=-1-(3-y)
y=-4y
x=3-(4y)
x=-1
x+y=-1
x-x+y=-1-x
y=-1-x
y=-1-(3-y)
y=-4y
x=3-(4y)
x=-1