Distance Between Two Points
Easydistance formula
The straight-line distance between points (1, 2) and (5, 10) is most nearly:
- A8.00
- B12.00
- C13.42
- D8.94
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Answer: D. 8.94
Equation: d = √[(x₂ − x₁)² + (y₂ − y₁)²]. Values: P₁ = (1, 2), P₂ = (5, 10). Step 1: Δx = 4, Δy = 8. Step 2: d = √(16 + 64) = √80 = 8.94. 12.00 adds Δx and Δy; 13.42 adds the coordinates instead of subtracting; 8.00 is Δy alone.
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