midpoint formula
mid of (x1,y1) and (x2,y2) is
\(( \frac{x2+x1}{2}, \frac{y2+y1}{2})\)
so
(22,15)=\(( \frac{18+x1}{2}, \frac{6+y1}{2})\)
therefor
22=\(\frac{18+x1}{2}\)
and
15=\(\frac{6+y1}{2}\)
slv each
22=\(\frac{18+x1}{2}\)
times both sides by 2
44=18+x1
minus 18 both sides
26=x1
15=\(\frac{6+y1}{2}\)
times both sides by 2
30=6+y1
minus 6
24=y1
the other point is (26,24)
