The coordinates of P are (-2,5) and the coordinates of Q are (6,1)
(C) What is the equation of the perpendicular bisector of PQ?
figure out the midpoint of that line (is it 2,3?
then figure the slope of that line (change in y/change in x)
take the negative reciprocal of that slope, that will be the slope of the perpendicular
y=mx+b
Put in the midpoing (x,y), and the slope of the perpendicular, and solve for b.
YOu now have m, and b