Straight Lines

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The distance between points (3, 4) and (6, 8) is

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1. **Distance Formula**: The distance $d$ between $(x_1, y_1)$ and $(x_2, y_2)$ is $d = \sqrt{(x_2-x_1)^2 + (y_2-y_1)^2}$.
2. **Identify Coordinates**: $(x_1, y_1) = (3, 4)$ and $(x_2, y_2) = (6, 8)$.
3. **Calculation**:
   - $d = \sqrt{(6-3)^2 + (8-4)^2}$
   - $d = \sqrt{3^2 + 4^2} = \sqrt{9 + 16} = \sqrt{25}$
4. **Final Value**: $d = 5$.

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