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If a x^(2)+2 h x y+b y^(2)+2 g x+2 f y+c...

If `a x^(2)+2 h x y+b y^(2)+2 g x+2 f y+c=0` represents a parallel lines, then

A

`(f^(2)-g^(2))/(b^(2)-h^(2))`

B

`(f^(2)+g^(2))/(b^(2)+h^(2))`

C

`((f+g)^(2))/((b+h)^(2))`

D

`((f-g)^(2))/((b-h)^(2))`

Text Solution

Verified by Experts

The correct Answer is:
B
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HIMALAYA PUBLICATION-Pair Of Lines-QUESTION BANK
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  2. The equation of the pair of lines passing through the origin and perpe...

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  8. Area of the parallelogram formed by 2 x^(2)+5 x y+3 y^(2)=0 and 2 x^(2...

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  9. The four lines given by y^(2)-4 y+3=0 and x^(2)+4 x y+4 y^(2)-5 y-10 y...

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  10. The four lines given by 3 x^(2)+10 x y+3 y^(2)=0 and 3 x^(2)+10 x y+3 ...

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  11. The four lines given by the equations 12 x^(2)+7 x y-12 y^(2)=0 and 12...

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  12. The point of intersection of perpendicular lines a x^(2)+3 x y-2 y^(2)...

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  14. The area of the triangle formed by the lines x^(2 )+4 x y+y^(2)=0, x+y...

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  16. The acute angle between the lines x^(2)-2 x y sec alpha+y^(2)=0 is

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