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For what value of lamda do the following...

For what value of `lamda` do the following equations represent pair of straight lines?
`x^2 - 4xy - y^2 + 6x + 8y + lamda = 0`

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MBD PUBLICATION-STRAIGHT LINES-QUESTION BANK
  1. Which of the following equations represent pair of lines ? 10x^2 - ...

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  2. Which of the following equations represent pair of lines ? xy + x +...

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  3. For what value of lamda do the following equations represent pair of s...

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  4. For what value of lamda do the following equations represent pair of s...

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  5. Obtain the value of lamda for which the pair of straight lines represe...

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  6. Prove that a pair of lines through origin perpendicular to the pair of...

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  7. Obtain the condition that a line of the pair of lines ax^2 + 2hxy + ...

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  8. Obtain the condition that a line of the pair of lines ax^2 + 2hxy + ...

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  9. Find the acute angle between the pair of lines given by : x^2 + 2xy ...

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  10. Find the acute angle between the pair of lines given by : 2x^2 + xy -...

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  11. Find the acute angle between the pair of lines given by : x^2 + xy - ...

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  12. Write down the equation of pair of bisectors of the following pair of ...

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  13. Write down the equation of pair of bisectors of the following pair of ...

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  14. Write down the equation of pair of bisectors of the following pair of ...

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  15. Write down the equation of pair of bisectors of the following pair of ...

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  16. If the pair of lines represented by x^2 - 2pxy - y^2= 0 and x^2 - 2qxy...

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  17. Transform the equaton : x^2 + y^2 - 2x - 4y + 1 = 0 by shifting t...

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  18. Transform the equation : 2x^2 + 3y^2 + 4xy - 12x - 14y + 20 = 0 when r...

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  19. Find the measure of rotation so that the equation x^2 - xy + y^2 = 5 w...

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  20. What does the equation x + 2y - 10 = 0 become when the origin is chang...

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