△ABC has vertices A(5, 3), B(1, 9), and C(8, 7). Write the equation of the line that contains the perpendicular bisector of side AB. Your answer should be in y=mx+b form with NO spaces.

12/11c

or

12

c

11

step-by-step explanation:

for exempl this   system of equations   y = x - 3

                                                                y = 2x - 5

look   the line : y = x -3     ( red)

                            the line : y = 2x -5 ( bleus)