Anyways, i have a new problem:

1)Let line

be the graph of

. Line

is perpendicular to line

and passes through the point (10,10). If line

is the graph of the equation y =mx + b, then find m+b.

2) Find B-A if the graph of Ax + By = 7 passes through (2,1) and is parallel to the graph of 2x - 7y = 3

3)The "perpendicular bisector" of the line segment

is the line that passes through the midpoint of

and is perpendicular to

.

The equation of the perpendicular bisector of the line segment joining the points (1,2) and (-5,12) is y=mx+b. Find m + b.