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If the equation (a1-a2)x+(b1-b2)y=c repr...

If the equation `(a_1-a_2)x+(b_1-b_2)y=c` represents the perpendicular bisector of the segment joining `(a_1,b_1)(a_2,b_2),` then `2c =`

A

`a_(1)^(2)-b_(1)^(2)+a_(2)^(2)-b_(2)^(2)`

B

`a_(1)^(2)+b_(1)^(2)+a_(2)^(2)+b_(2)^(2)`

C

`a_(1)^(2)+b_(1)^(2)-a_(2)^(2)-b_(2)^(2)`

D

none of these

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The correct Answer is:
C
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MCGROW HILL PUBLICATION-CARTESIAN SYSTEM OF RECTANGULAR COORDINATES AND STRAIGHT LINES -SOLVED EXAMPLES (LEVEL 1) SINGLE CORRECT ANSWER TYPE QUESTIONS
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  7. A straight line through the point A(3, 4) is such that its intercept b...

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  8. Let A(h, k), B(1, 1) and C(2, 1) be the vertices of a right angled ...

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  9. Let A(2,-3)a n dB(-2,1) be vertices of a triangle A B Cdot If the cent...

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  10. If the sum of the slopes of the lines given by x^2-2cxy-7y^2=0 is four...

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  11. which Find the locus of the mid-point of the portion of the line x cos...

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  12. The lines x + y=|a| and ax-y = 1 intersect each other in the first qua...

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  13. A square of side 'a' lies above the x-axis and has one vertex at the o...

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  14. Locus of centroid of the triangle whose vertices are (a cos t, a sin t...

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  18. If alpha, beta gamma are the real roots of the equation x^(3)-3px^(2)+...

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  19. The line L has intercepts a and b on the coordinate axes. The coordina...

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