Question

WE has a midpoint at K. The coordinates of the midpoint K are (0,3) and the coordinates of W are (2,-1). Find the coordinates of E.

Answer 1

Coordinates of E is (-2,7)

Explanation:

Midpoint = ((x1+x2)/2,(y1+y2)/2)

xK = (xW + xE)/2 => xE = 2xK - xW = 2(0) - 2 = -2

yK = (yW + yE)/2 => yE = 2yK - yW = 2(3) - (-1) = 7