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If the gradiant of the line joining the points `(2a, -2) ` and `(1, -a) ` is `-2 `. Find the value of `a `.

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UNITED BOOK HOUSE-MODEL QUESTION PAPERS-SET 4-EXERCISE
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  9. For any three sets A, B, C. prove that A xx (B cup C)=" (A xx B) cup(A...

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  16. The equation of the two adjacent sides of a parallelogram are 4x+ 5y =...

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  17. In a rectangle, the co-ordinates of the end point of a diagonal are (2...

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  18. If the straight line dx + cy = cd is perpendicular the line joining th...

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