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
Explanation
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.
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