COORDINATE GEOMETRY C4

Find the midpoint of a line from (-11, -20) to (5, 6).

solution

x1=-11, x2=-20, y1=12,y2=6.

Mid point = (x1 + x2, y1 + y2)

                         2             2

Mid point = (-11 + -20, 12 + 6)

                         2              2

Mid point = (-31, 18)

                     2     2

Hence midpoint = (-31/2, 9)

TRY THIS.....................

Find the midpoint of a line from (-1, -10) to (6, 11).