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If (3, 3) is a vertex of a triangle and (- 3, 6) and (9,6) are the mid-points of the two sides through this vertex, then the centroid of the triangle is :

A

(3, 7)

B

(1, 7)

C

(-3, 7)

D

(- 1, 7).

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MODERN PUBLICATION-CONIC SECTIONS-EXERCISE
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  2. If, in a hyperbola, the distance between the foci is 10 and the transv...

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  3. If (3, 3) is a vertex of a triangle and (- 3, 6) and (9,6) are the mid...

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  14. Let PQ and RS be tangents at the extremities of the diameter PR or a c...

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  15. The area of the parallelogram formed by the lines y=m x ,y=x m+1,y=n x...

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  18. The area bounded by the curves : y=|x-1| and y=1 is :

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