The circumcenter is equal distance from all 3 verices. Using distance formula, equate distance to A with distance to C: [tex](x+3)^2 +(y+4)^2 = (x+3)^2 + y^2[/tex] The x terms cancel, Expand and solve for y: [tex]y^2 +8y+16 = y^2[/tex] [tex]y = -2[/tex] Now do same thing for point A and B: [tex](x+3)^2 + (y+4)^2 = (x-1)^2 + (y+4)^2[/tex] y terms cancel [tex]x^2 +6x+9 = x^2-2x+1[/tex] [tex]x = -1[/tex]
