)use a graphing utility and augmented matrix methods to solve the system: 6) 1.8x1 - 12.17x2 = 33
-3.75x1 + 5.73x2 = 7
express your answer accurate to three decimal places.

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.