The straight line `8x-18y+31=0` bisects perpendicularly the straight line -segment joining the points `P(2,8)andQ(h,k)`, find the values of h and k.

Find the equation of the straight line which divides perpendicularly the straight line -segment joining the points (7,9) and (-1,-7) internally in the ratio 3 :5 . What is the distance of this line from origin?

The straight line 3x+y=9 divides the straight line segment joining the points (1, 3) and (2, 7) are in ratio

Find the equation of a plane which bisects perpendicularly the line segment joining the points A(2,3,4) and B(4,5,8).

The straight line joining the points (-2,5) and (-4,3) is perpendicular to the line joining the points (k,0) and (2,3k) , find k.

The equation of the line bisecting perpendicularly the segment joining the points (-4,6) and (8,8) is

The equation of the line bisecting perpendicularly the segment joining the points (-4,6) and (8,8) is

The equation of the line bisecting perpendicularly the semgent joining the points (-4,6) and (8,8) is

Find the ratio in which (-6,a) divides the line segment joining the points (-3,1) and (-8,9). Also find the value of a.