Exam (elaborations)
AS-level Edexcel Pure Maths - Module 5: Straight line graphs|2023 LATEST UPDATE|GUARANTEED SUCCESS
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Gradient of a line (y₂-y₁) ÷ (x₂-x₁) Distance between 2 points Use pythagoras' theorem √[(∆x)²+(∆y)² Parallel lines - Gradient is equal - Y-intercept is different Perpendicular lines - Gradients multiply to make -1 - Gradients are a negative reciprocal t...
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