Answer:
The answer to your problem is, B. (-1,3)
Explanation:
( My guess why you have put it a question is because you do not know why it is incorrect let me explain )
The coordinates that are given the intersection is: ( -1, 3 )
Being the answer.
Here the equations of the system of equations are:
-x+y=4
6x+y= -3
Put it on a coordinate plane ( In picture )
Thus the answer to your problem is, B. (-1,3)
Picture ↓