Question

abc is a triangle whose centroid is G. if a is (-3,1)B is (2,b), c is (a,-4)and G is (1,-1)then find a and b?

Answer 1

centroid is (x1 +x2+x3) (y1+y2+y3)
x1= -3 , x2= 2 , x3=a
y1= 1, y2=b , y3=-4
centroid coordinate is (x,y) = (1,-1)
1= -3+2+a
1= -1+a
2= a
-1= 1+b-4
-1= b-3
-1+3=b
2=b
value of a= 2 and b=2

Answer 2

(x,y)[CENTROID
x=(x1+x2+x3)/3
y=(y1+y2+y3)/3

now you can try it...