Determine whether the following points are collinear: D(-2, -3), E(1, 0), F(2, 1).

Doubtly Asked 24 Oct 2026 Save WhatsApp Report

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Answer: The points are collinear.

Slope \(=\dfrac{y_2-y_1}{x_2-x_1}\).

Slope of DE = \(\dfrac{0+3}{1+2}=1\)

Slope of EF = \(\dfrac{1-0}{2-1}=1\)

The slopes are equal and the two segments share a point, so the points lie on one line.

Doubtly AI · 24 Oct 2026 AI-verified · Oct 2026 Report

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