Question 565619
{x+3y=6}
{4x + 6y = -6}
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Multiply thru the 1st equation by 2:
2x + 6y = 12
4x + 6y = -6
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Subtract and solve for "x":
2x = -18
x = -9
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Solve for "y":
x + 3y = 6
-9 + 3y = 6
3y = 15
y = 5
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Solution: (-9,5)
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Cheers,
Stan H. 
These are the choices for the problem 
(-9, 5)
(-3, 3)
(6, 3)
(12, -2)