The distance between point T and the midpoint in the x-axis is equal to 3 - 0. 3-0=3 The distance between point T and the midpoint in the y-axis is equal to 5 - (-8). 5- (-8) = 5+8 = 13
It may help to graph this part. The x-coordinate of point S is equal to 3 + 3. 3+3 = 6 The y-coordinate off point S is equal to -8 - 13. -8 - 13 = 21