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Find the relation between a and b if the...

Find the relation between `a` and `b` if the lines `3x-by+5=0` and `ax+y=2` parallel.

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The correct Answer is:
`ab+3=0`
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NAGEEN PRAKASHAN-STRAIGHT LINES-Exercise
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  2. Find the distance between the parallel lines x+4sqrt(3)y+10=0 and x+4s...

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  3. Find the relation between a and b if the lines 3x-by+5=0 and ax+y=2 pa...

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  4. If p and q are the lengths of perpendicular from the origin to the li...

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  5. Show that the distance between the parallel lines ax+by+c=0 and k(ax+b...

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  6. (i) If the length of perpendicular from origin to the line ax+by+a+b=0...

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  7. The equations of sides AB, BC and AC of DeltaABC are respectively y=x,...

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  8. If p is the length of perpendicular from the origin to the line whose...

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  9. Find the coordinates of the incentre and centroid of the triangle whos...

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  10. Find the co-ordinates of the circumcentre of a triangle whose vertices...

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  11. Find the co-ordinates of the orthocentre of a triangle whose vertices ...

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  12. The equation of one diagonal of a square is 2x+y=6 and its one vertex ...

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  13. The co-ordinates of the vertex of an equilateral triangle are (2,-1) a...

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  14. A ray of light is sent along the line x-2y-3=0 upon reaching the line ...

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  15. show that the equation of the straight line through the origin making ...

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  16. Show that the straight lines given by (2+k)x+(1+k)y=5+7k for different...

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  17. Find the equation of a line passing through the point of intersection ...

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  18. Find the equation of a line passing through the point of intersection ...

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  19. Find the equation of line passing through the point of intersection of...

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  20. Find the equation of a line passing through the point of intersection ...

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