A ( 3, 1) B ( 2,4) C (-1, 2)
some things that go with this equation
this is what i have so far i don't know if its correct
(3-a)2 + (1-b)2 = r2 those 2's r squared im new to this and i just plugged in for the rest.
Correct me if im wrong please and help me out if you can