If `2x-3y-5=0` is the perpendicular bisector of the line segment joining `(3,-4)` and `(alpha, beta)` then find `alpha+beta`.

If 2 x+3 y+4=0 is the perpendicular bisector of the segment joining the points A(1,2) and B(alpha, beta) then the value of alpha+beta is

If 2x+3y+4=0 is perpendicular bisector of the segment joining the points A(1,2) and B(alpha,beta) then the value of alpha+beta is

If the perpendicular bisector of the line segment joining A(alpha,3) and B(2,-1) has y-intercept 1 then | alpha| =

If the perpendicular bisector of the line segment joining A(alpha , 3) and B(2,-1) has y-intercept 1, then alpha =

If the foot of the perpendicular from (-4,5) to the straight line 3x-4y-18=0 is (alpha,beta) then value of (alpha+beta)=

If the foot of the line perpendicular from (-4,5) to the straight line 3x-4y-18=0 is (alpha, beta) then the value of alpha+beta=