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If three lines whose equations arey = m1...

If three lines whose equations are`y = m_1x + c_1`, `y = m_2x + c_2` and `y = m_3x + c_3` are concurrent, then show that `m_1(c_2 - c_3) + m_2 (c_3 -c_1) + m_3 (c_1 - c_2) = 0`.

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PSEB-STRAIGHT LINES-EXERCISE
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  5. Find the value of p so that the three lines 3x + y - 2 = 0, px + 2y-3 ...

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  6. If three lines whose equations arey = m1x + c1, y = m2x + c2 and y = m...

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  7. Find the equation of the lines through the point (3,2) which make an a...

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  8. Find the equation of the line passing through the point of intersectio...

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  9. Show that the equation of the line passing through the origin and maki...

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  10. In what ratio, the line joining (-1, 1) and (5, 7) is divided by the l...

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  11. Find the distance of the line 4x + 7y + 5 = 0 from the point (1, 2) al...

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  14. Find the image of the point (3, 8) with respect to the line x +3y=7 as...

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  15. If the lines y = 3x +1 and 2y = x + 3 are equally inclined to the line...

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  18. A ray of light passing through the point (1, 2) reflects on the x-axis...

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