Question

use the midpoint formula to find the midpoint between q(10,-8) and r(5,-2)

Answer 1

The formula of a midpoit of QR:

$M\left(\dfrac{x_Q+x_R}{2},\ \dfrac{y_Q+y_R}{2}\right)$

We have Q(10, -8) and R(5, -2). Substitute:

$x_M=\dfrac{10+5}{2}=\dfrac{15}{2}=7.5\\\\y_M=\dfrac{-8+(-2)}{2}=\dfrac{-10}{2}=-5$

Answer: M(7.5, -5)