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If (2, 1), (-1, -2), (3, 3) are midpoint...

If (2, 1), (-1, -2), (3, 3) are midpoints of sides BC, CA, AB of `DeltaABC`, then the equation of AB is

A

`x-y=1`

B

`x+y=1`

C

`x-y=9`

D

`x-y=0`

Text Solution

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The correct Answer is:
D
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AAKASH SERIES-STRAIGHT LINES-EXERCISE I
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  2. The equation of the line passing through the point (2, -3) and paralle...

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  3. If (2, 1), (-1, -2), (3, 3) are midpoints of sides BC, CA, AB of Delta...

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  4. The equation of the line perpendicular to the line x = 3 and passing t...

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  5. The equation of the line passing through the (2,3) and perpendicular t...

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  6. If the equation (a(1)-a(2))x+(b(1)-b(2))y=c represents the perpendicul...

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  7. A(-1, 1), B(5, 3) are opposite vertices of a square. The equation of t...

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  8. In a rhombus ABCD the diagonals AC and BD intersect at the point (3, 4...

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  9. The equation of the straight line whose slope is 4 and y-intercept is ...

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  10. The equation of the straight line whose inclination is (pi)/4 and x-in...

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  11. The equation of a straight line passing through, (3,-1) and having int...

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  12. The intercepts a,b of a straight line on the co ordinate axes are give...

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  13. A straight line passes through the fixed point [1/k,1/k]. The sum of ...

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  14. The area of the triangle formed by the line x cos alpha+y sin alpha=p ...

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  15. If the area of the triangle formed by the lines x=0, y=0, 3x+4y=a(a gt...

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  16. The area of the triangle formed by the line passing through the points...

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  17. If a straight line perpendicular to 2x-3y+7=0 forms a triangle with th...

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  18. The equation of a straight line, perpendicular to 3x-4y=6 and forming ...

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  19. The equation of the line whilch is 10 units from the origin and the no...

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  20. A straight line makes an angle (pi)/3 with positive direction of x-axi...

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