Me the vertices of a square are a(-2 4), b(4,4), c(4,-2), d(-2,-2). the diagonals of the square intersect at their midpoints. what are the coordinates of the midpoint where the diagonals intersect

We have to find midpoint M of the diagonal AC (or BD, there is no difference) so:

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.