I have a triangle with the following vertices:
A (-25,20)
B (-5,-40)
C (15,30)
The equation of the perpendicular bisector of AB which passes through D is y=3x + 35
The equation of the perpendicular bisector of CB which passes through E is y=-2x/7 - 25/7
I've tried the substitution method but keep getting X = -270/23 and Y = -5/23
I'm sure these coordinates are wrong because I've got the circumcentre drawn already and it says it is (2.31,-4.23)
Any help would be appreciated