The coordinates of △DEF are D(−1, 4), E(7,−3), and F(9,5). Write a rule for the translation of △DEF to △D′E′F′, so that the centroid of △D′E′F′ is (9,6). (x,y) → (x+ , y+ )

Answer 1

Current centroid is ((-1 + 7 + 9)/3, (4 -3 + 5)/3) = (5,2)

go to (9,6) need to increase average x and y by 4 so

(x, y) --> (x+4,y+4)