A(7, -2) B(-4, 9) C(-3,-1)
AB² = (7 - -4)² + (9 - -2)² = 121 + 121 = 242
AC² = (7 - -3)² + (-2 - -1)² = 100 + 1 = 101
BC² = (-3 - -4)² + (9 - -1)² = 1 + 100 = 101
Since AC² + BC² ≠ AB² this isn't a right triangle
It is clearly an isosceles triangle because AC² = BC²
Answer: Isosceles