Question

If the vertices of a triangle are A(1, K), (4, -3) and (-9, 7) and it's area is 15 square units . Find the value of k.​

Answer 1

Answer:

Step-by-step explanation:

Centroid of a triangle with vertices

(x 1 ,y 1 );(x 2 ,y 2 ) and (x 3 ,y 3 ) is calculated by the formula ( 3x 1 +x 2 +x 3 , 3y 1 +y 2+y 3 )So,

centroid =( 34+3+5 , 3−6−2+2 ) =(4,−2)

Answer 2

Answer:

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