The x coordinate of R decreases by 4 to get to the midpoint S. So going 4 more will get the xx coordinate of T: −6.

The y coordinate of R decreases by 6 to get to the midpoint S. So going 6 more will get the yy coordinate of T: −6.

Hence the coordinates of TT are (−6,−6).

The y coordinate of R decreases by 6 to get to the midpoint S. So going 6 more will get the yy coordinate of T: −6.

Hence the coordinates of TT are (−6,−6).