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If ax^(2)+6xy+3y^(2)-10x+10y-6=0 represe...

If `ax^(2)+6xy+3y^(2)-10x+10y-6=0` represents a pair of perpendicular lines, then `|a|=`

A

`pm3`

B

`0`

C

`-3`

D

`3`

Text Solution

Verified by Experts

The correct Answer is:
D
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NIKITA PUBLICATION-PAIR OF STRAIGHT LINES-MULTIPLE CHOICE QUESTIONS
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  2. If the lines represented by sin^(2)alpha(x^(2)+y^(2))=((cosalpha)x-(si...

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  3. If ax^(2)+6xy+3y^(2)-10x+10y-6=0 represents a pair of perpendicular li...

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  4. The sum of the slopes of the lines given by x^(2)-7xy+12y^(2)=0 is

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  5. The product of the slopes of the line given by x^(2)-xy-6y^(2)=0 is

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  6. If the sum of the slopes of the lines given by 3x^(2)+kxy-y^(2)=0 is z...

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  7. If the lines represented by 6x^(2)+41xy-7y^(2)=0 makes angle alpha and...

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  8. If the lines represented by ax^(2)-bxy-y^(2)=0 makes angle alpha and b...

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  9. If the lines represented by x^(2)-4xy+y^(2)=0 makes angle alpha and be...

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  10. If the sum of the square of slopes of the lines represented by kx^(2)-...

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  11. If the slope of one of the lines given by kx^(2)+(3k+1)xy+3y^(2)=0 is ...

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  12. If the slope of one of the lines given by ax^(2)+2hxy+by^(2)=0 is k ti...

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  13. If the sum of the slopes of the lines given by 2x^(2)+kxy-3y^(2)=0 is ...

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  14. If sum of the slopes of the lines represented by x^(2)+kxy-3y^(2)=0 is...

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  15. If the sum of the slopes given by ax^(2)+8xy+5y^(2)=0 is twice their p...

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  16. if X^2/a+y^2/b+(2xy)/h=0 represent pair of straight lies and slope one...

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  17. If the slopes of the line given by 6x^(2)+2hxy+y^(2)=0 are in the rati...

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  18. If the slopes of one of the line given by ax^(2)+2hxy+by^(2)=0 is thre...

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  19. If the slopes of one of the line given by 3x^(2)+4xy+ky^(2)=0 is three...

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  20. If the ratio of gradients of the line given by ax^(2)+2hxy+by^(2)=0 i...

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