Question

show that s(4,3), is the circumcentre of the triangle joining the points (9,3) (7,-1) and (1,-1)
please it's very urgent

Answer 1

SA=(4-9)² + (3-3)²=-5²+0=25

SB=(4-7)² +(3+1)²=-3²+4²=9+16=25

SC=(4-1)² + (3+1)²=3²+4²=9+16=25
SO S IS THE CIRCUMCENTRE OF THE GIVEN Δ