Question

if a (3,-5)B (10,-2)C(x,y) forms a triangle and G(2,-1) is its centroid find the coordinates of C??

Answer 1

I have just answered same question as yours....

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Formula

Coordinates of centroid ΔABC is a mean value of :

x, y coordinates of A, B and C.

$\frac{3+10+x}{3} =2$

$x+13=6$

$x=-7$

$\frac{-5-2+y}{3} =-1$

$y-7=-3$

$y=4$

∴$C(-7,4)$