Question

sendo m(6,-1) o ponto medio AB e senso A(0,3). determine as coordenadas de B

Answer 1

M= Xa+Xb/2
6=0+Xb/2
Xb=6*2
Xb=12

M= Ya+Yb/2
-1= 3+Yb/2
-1=3+Yb/2
-1*2-3=Yb
-2-3=Yb
-5=Yb