Question

The vertices of a triangle are (1,-1) and (5, 1).if the coordinates of its centroid be (5/3,1) and then the coordinates of the 3 vertex c is
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Answer 1

Answer:

(-1,3)

Step-by-step explanation:

the vertices are : A(1,-1), B(5,1) and let C(x,y).

Centroid is (5/3,1)

now,

from x-coordinate of centroid,

5/3 = (1+5+x)/3

=>5 = 6+x

=>x= -1

from ordinate of centroid,

1 = (-1+1+y)/3

=> 3 = y

=> y=3