Step-by-step explanation:
x-2x-3=9
-x=9+3
-x=12
x=12/-1
x=-12
the coordinates of y are (1,-4)
Step-by-step explanation:
by using midpoint formula
z(x,y)=(,
)
putting the values of coordinates
(3,-1)=,
separating the coordinates
3= and -1=
3×2=5+a and -1×2=2+b
6=5+a and -2=2+b
6-5=a and -2-2=b
1=a and -4=b
so the actual coordinates of y are (1,-4)
i hope it will help you