Calculate slope, distance, midpoint, and line equation between two points.
| Slope (m) | — |
| Y-Intercept (b) | — |
| Line Equation | — |
| Distance | — |
| Midpoint | — |
| Angle | — |
m = (y₂−y₁)/(x₂−x₁). Positive slope = rises left to right. Negative = falls. Zero = horizontal. Undefined = vertical.
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