midoint formula
the midoin between (x1,y1) and (x2,y2) is
\(( \frac{x1+x2}{2}, \frac{y1+y2}{2})\)
midpont=11,-22
endoint is 17,-19
(11,-22)=\(( \frac{17+x2}{2}, \frac{-19+y2}{2})\)
therfor
11=\(\frac{17+x2}{2}\)
-22=\(\frac{-19+y2}{2}\)
solve each
times 2 to both sides of both euations
22=17+x2
-44=-19+y2
minus 17 both sides for first
add 19 both sides for second
5=x2
-25=y2
the other endpoint is (5,-25)
