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If the equation ax^2 + 2hxy + by^2 + 2gx...

If the equation `ax^2 + 2hxy + by^2 + 2gx + 2fy + c = 0` represents a pair of parallel lines, prove that
`a/h = h/b = g/f`

A

1

B

2

C

3

D

4

Text Solution

Verified by Experts

The correct Answer is:
D
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CHHAYA PUBLICATION-COORDINATE GEOMETRY-WBJEE Archive (2012)
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  14. Let p , q , r be the altiudes of triangles with area s and perimeter ...

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  17. Let P and Q be the points on the prabola y^(2) = 4x so that the lin...

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