Question

Find the coordinates of the midpoint of if J (-9,-5) and K (21,-7).

Answer 1

(6, -1)

Explanation:

P=(px,py) and Q=(qx,qy) is M=(px+qx2,py+qy2)

We have that px=−9, py=5, qx=21, qy=−7.

Thus, M=(−9+212,5−72)=(6,−1).

Answer 2

(6,-6)

Explanation:

`Midpoint = \left((x_2+x_1)/(2),\:\:(y_2+y_1)/(2)\right)\\\\\left(x_1,\:y_1\right)=\left(-9,\:-5\right),\:\\\left(x_2,\:y_2\right)=\left(21,\:-7\right)\\\\=\left((21-9)/(2),\:(-7-5)/(2)\right)\\\\=((12)/(2) , (-12)/(2))\\ \\=\left(6,\:-6\right)`