I'm having trouble on these questions.
4x + 6y = -12
2x + 3y = 9

x + y = -4
-3x + 2y = 2

x + y = -1
4x + 4y = -4

x - y = -2
3x - y = 0

x - 4y = -8
2x - 3y = -16

Question

I'm having trouble on these questions.
4x + 6y = -12 
2x + 3y = 9

x + y = -4 
-3x + 2y = 2 

x + y = -1 
4x + 4y = -4

x - y = -2 
3x - y = 0

x - 4y = -8 
2x - 3y = -16

anonymous · Answer

Turn them into slope intercept form (y=mx+b). That will help. For example, one of the sets has the same equation twice (just in different forms), and another has two parallel lines that never intersect.

anonymous · Answer

are all four separate or one is pair the problem and the other 4 are answers?

anonymous · Answer

No those are all problems the answers I have to choose from are 
Which system has (-8, 0) as the solution?
Which system has infinite solutions?
Which system has (1, 3) as the solution?
Which system has (-2, -2) as the solution?
Which system has no solutions?