Find the missing endpoint if S is the midpoint RT. R(-9, 4) and S(2, -1); Find T.
we know that
The formula to calculate the midpoint between two points is equal to
[tex]s(\frac{x1+x2}{2},\frac{y1+y2}{2}_{})[/tex]we have
S(2,-1)
(x1,y1)=R(-9,4)
(x2,y2)=T
substitute the given values in the formula
[tex]s(2,-1)=(\frac{-9+x2}{2},\frac{4+y2}{2}_{})[/tex]Find the x2 coordinate
2=(-9+x2)/2
-9+x2=4
x2=4+9=13
Find the y2 coordinate
-1=(4+y2)/2
4+y2=-2
y2=-2-4
y2=-6
therefore