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If the two pair of lines 2x^(2)+6xy+y^(2...

If the two pair of lines `2x^(2)+6xy+y^(2)=0` and `4x^(2)+18xy+by^(2)=0` are equally inclined to each other then b=

A

1

B

`-1`

C

2

D

`-2`

Text Solution

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A
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AAKASH SERIES-PAIR OF STRAIGHT LINES-PRACTICE EXERCISE
  1. If the paris x^(2)-2pxy-y^(2)=0 and x^(2)-2qxy-y^(2)=0 are such that o...

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  2. The pair of lines 2x^(2)+3xy+5y^(2)=0 and 4x^(2)+21xy+25y^(2)=0 are

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  3. If the two pair of lines 2x^(2)+6xy+y^(2)=0 and 4x^(2)+18xy+by^(2)=0 a...

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  4. If 2x^(2)-5xy+2y^(2)=0 represents two equal sides of an isosceles tria...

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  5. The value of k such that the lines 6x^(2)+17xy+12y^(2)=0 and kx^(2)+5x...

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  6. The equation to the pair of lines through the origin and forming an eq...

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  7. The equation of the pair of lines passing through origin and making an...

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  8. The area of the triangle formed by the lines 6x^(2)-13xy+6y^(2)=0 and ...

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  9. The lines x^(2)-4xy+y^(2)=0,x+y=3 form a trangle which is

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  10. The line 3x-4y+5=0 and pair of straight lines 3(3y+4x)^(2)-(3x-4y)^(2...

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  11. The triangle formed by x^(2)-3y^(2)=0 and the line x=a is

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  12. The area of the equilateral triangle formed by the pair of lines passi...

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  13. The point of intersection of the pair of lines represented by 2x^(2)+5...

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  14. If xy+x+y+1=0,x+ay-3=0 are concur rent then a =

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  15. If (1, k) is the point of intersection of the lines given by 2x^(2)+5x...

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  16. If the pair of lines ax^(2)+2hxy+by^(2)+2gx+2fy+c=0 intersect on the y...

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  17. If the pair of lines ax^(2)+2hxy+by^(2)+2gx+2fy+c=0 intersect on the y...

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  18. The acute angle between the pair of lines2x^(2)+5xy+2y^(2)-17x-19y+35=...

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  19. The acute angle between the pair of lines xy+3x+3y+9=0 is

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  20. If theta is acute angle between the pair of lines x^(2)-3xy+2y^(2)+3x-...

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