Answer:
The y coordinate of point R is [tex]-9[/tex]
Step-by-step explanation:
we know that
The formula to calculate the midpoint between two points is equal to
[tex]M(x,y)=(\frac{x1+x2}{2},\frac{y1+y2}{2})[/tex]
In this problem
[tex]R(x2,y2)[/tex]
[tex]Q(-2,-6)=(\frac{-5+x2}{2},\frac{-3+y2}{2})[/tex]
so
[tex]-2=(-5+x2)/2[/tex] --->[tex]x2=-4+5=1[/tex]
[tex]-6=(-3+y2)/2[/tex] --->[tex]y2=-12+3=-9[/tex]
therefore
The y coordinate of point R is [tex]-9[/tex]
