Please help me to answer these questions with COMPLETE & CLEAR SOLUTION

THANK YOU!

9. The three midpoints are given as shown below. A (x1, )1) D (-7, 6) F (2, -2) KG (x, y) B E C (x2, )2) (8, 5) (x3. )3) a. Find the coordinates of the image of three midpoints after a reflection over the y- axis b. Find the coordinates of the image of three midpoints after a reflection over the X- axis c. Find the coordinates of the image of three midpoints after a reflection over the origin d. Find the coordinates of the centroid of the triangle