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If a x^(2)+6 x y+b y^(2)-10 x+10 y-6=0 r...

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

A

1

B

4

C

-1

D

3

Text Solution

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The correct Answer is:
B
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HIMALAYA PUBLICATION-Pair Of Lines-QUESTION BANK
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  2. Point of intersection of pair of lines x^(2)+x y+2 y^(2)-3 x+2 y+4=0 i...

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  3. If a x^(2)+6 x y+b y^(2)-10 x+10 y-6=0 represents a pair of perpendicu...

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  4. The difference of slopes of the lines represented by y^(2)-2 x y sec ^...

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  5. The angle between the pair of lines 2(x+2)^(2)+3(x+2)(y-2)-2(y-2)^(2)=...

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  6. The equation of the pair of lines through (1,-1) and perpendicular to ...

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  7. The equation of the line common to the pair of lines (p^(2)-q^(2)) x^(...

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  8. If the pair of lines given by (x^(2)+y^(2)) sin ^(2) alpha=(x cos alph...

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  9. If a, h, b are in A.P. then the triangular area formed by the pair of ...

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  10. If the equation a x^(2)+5 x y-6 y^(2)-10 x+11 y+c=0, represents two pe...

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  11. The equation of the pair of lines through the points (a, b) parallel t...

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  12. If the equation lambda x^(2)-5 x y+6 y^(2)+x-3 y=0 represents a pair o...

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  13. The product of the perpendiculars from (-1,2) to the pair of-lines 2 x...

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  14. Area of the triangle formed by the lines 3 x^(2)-4 x y+y^(2)=0, quad 2...

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  15. The orthocentre of the triangle formed by the lines x+3 y=10 and 6 x^(...

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  16. If one of the lines of the pair a x^(2)+2 h x y+b y^(2)=0 bisects the ...

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  17. If the slope of one line is twice the slope of the other in the pair o...

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  18. If the pair of lines x y-x-y+1=0 and the line a x+2 y-3=0 are concurre...

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  19. If the angle 2 theta is acute, then the acute angle between the pair o...

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  20. If the coordinate axes are the bisectors of the angles between the pai...

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