Question

The mid-point of the line segment joining A (- 2 , 0) and B (x , y) is P (6 , 3). Find the coordinates of B.

Answer 1

Coordinates of P are ,

P (6 , 3) = P `((-2 + "x")/2 , (0 + "y")/2)`

`6 = (- 2 + "x")/2 , 3 = "y"/2`

⇒ 12 = - 2 + x , y = 6

⇒ x = 14

Coordinates of B are (14 , 6)