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The distance between the pair of paralle...

The distance between the pair of parallel lines`x^(2) + 2xy + y^(2) - 8ax - 8ay - 9a^(2) = 0` is... 

A

`2 sqrt(5)` a

B

`sqrt(10)` a

C

`10 a`

D

`5 sqrt(2)` a

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The correct Answer is:
D
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HIMALAYA PUBLICATION-Pair Of Lines-QUESTION BANK
  1. If the slope of one of the lines gives by ax^(2)+2hxy+by^(2)=0 is 5 ti...

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  2. If ax^(2)-y^(2)+4x-y=0 represents a pair of lines then a ...

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  3. The distance between the pair of parallel linesx^(2) + 2xy + y^(2) - 8...

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  4. The lines represented by ax^(2)+2hxy+by^(2)=0 are perpendicular to ea...

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  5. The area enclosed by the pair of lines xy = 0, the line x -4 = 0 and y...

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  6. The lines given by x^(2)+2 x y-35 y^(2)-4 x+44 y-12=0and the line 5 x+...

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  7. If the pair of lines ax^(2)+2 h x y+b y^(2)+2 g x+2 f y+c=0 intersec...

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  8. The pair of lines represented by 3 a x^(2)+5 x y+(a^(2)-2) y^(2)=0 are...

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  9. If the pairs of lines x^(2)-2pxy-y^(2)=0 and x^(2)-2qxy-y^(2)=0 be su...

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  10. If the sum of the slopes of the lines given by x^(2)-2cxy-7y^(2)=0 is...

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  11. If one of the lines given by 6 x^(2)-x y+4 c y^(2)=0 is 3 x+4 y=0, the...

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  12. If the pair of lines ax^2 +2 (a + b) xy + by^2 =0 lie along diameters ...

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  13. If the angle between the pair of linesx^(2)-3 x y+lambda y^(2)+3 x-5 y...

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  14. The triangle formed by x^(2)-3 y^(2)=0 and x=4 is

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  15. The distance between the pair of parallel lines x^(2)+4 x y+4 y^(2)+3 ...

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  16. If the lines 2 x^(2)+7 x y+3 y^(2)-9 x-7 y+k=0 represents a pair of li...

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  17. The equation of bisectors of the angle between the two lines 2 x^(2)-3...

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  18. The quadrilateral formed by the pair of lines x y+x+y+1=0, x y+3 x+3 y...

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  19. If x y+x+y+1=0 and x+q y-3=0 are concurrent then q=

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  20. The equation x^(2)-3 x y+lambda y^(2)+3 x-5 y+2=0, whose lambda is a r...

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