Question

question is in photo​

Answer 1

Answer:

a=2,b= -5

Step-by-step explanation:

centroid of traingle (X,Y) = (X1+X2+X3)/3     ,     (Y1+Y2+Y3)/3

X = -5+a+6/3               Y=3-1+B/3

1 *3 = 1+a                      -1*3=2+b

2=a                               -3-2 = b

                                      -5 = b

Answer 2

Solution is in the above attachment