if the feasible region points are:
y= x + 3
y = 3 - x
y = 4x - 12

what options represent constraints on the problem?

y - 4x (equal or more than) -12
y - 4x (less than or equal to) -12
4x = y (equal or more than) 12
4x = y (less than or equal to) 12
y - x (less than or equal to) 3
y - x (equal or more than) 3
x = y (equal or more than) 3
x = y (less than or equal to) 3

I can`t for the life of me work these out

cheers guyz.