1. m-2.7<4.9
2. r/-5≥ 6 1/2

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.

You need to include the original coordinates of the triangle to answer this. and how much does it translate (move left right up down)