Which of the following statements is true about the points A(5, -2), B(1, 2), and C(-2, 5)?

The points are collinear

The points form an equilateral triangle

The points form an isosceles triangle

None of these

Slope AB = (-2-2)/(5-1) = -4/4 = -1

Slope BC = (2-5)/(1-(-2)) = -3/3 = -1

Since slopes AB and BC are equal (-1), the points A, B, and C are collinear.