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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
The distance between them is `2sqrt((g^2 - ac)/(a(a + b)))`

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PATHFINDER-CARTESIAN COORDINATES AND STRAIGHT LINE-QUESTION BANK
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  3. If the equation ax^2 + 2hxy + by^2 + 2gx + 2fy + c = 0 represents a pa...

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  8. The point (4,1) undergoes the following three transformations successi...

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  9. A is (a,0) and B is (-a,0). If P is a point such that anglePAB - angle...

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  10. The points (-a,-b).(0,0),(a,b) and (a^2, ab) are

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  15. If t1, t2 and t3 are distinct, the points (t1, 2at1+at1^3), (t2,2at2+a...

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  17. A line passing through the point P(4,2) meets the x and y-axis at A an...

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  18. If P-=(1,0), Q-=(-1, 0), R-=(2,0) are three given points, then the loc...

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