Question

If the midpoint of ST is (5, -8),what is S if T is (1, 12)?

Answer 1

(9, -28)

Explanation:

Let S be (x,y)

`( (x + 1)/(2) . (y + 12)/(2) ) = (5. - 8) \\ x = 5(2) - 1 = 9 \\ y = - 8(2) - 12 = - 28`

Therefore, S is (9, -28)