Examples (PDF)
Clear and concise Coordinate Geometry notes for Edexcel A-Level Mathematics (Pure).
Includes key formulas, concepts, worked examples, and exam tips. Great for Year 12 and
13 revision. Used these notes to score an A!
Coordinate Geometry Summary
1. Equation of a Straight Line
Formula:
y=mx+cy = mx + cy=mx+c
● mmm = gradient
● ccc = y-intercept
Gradient between two points:
m=y2−y1x2−x1m = \frac{y_2 - y_1}{x_2 - x_1}m=x2−x1y2−y1
2. Parallel & Perpendicular Lines
● Parallel lines have the same gradient
m1=m2m_1 = m_2m1=m2
● Perpendicular lines:
m1⋅m2=−1m_1 \cdot m_2 = -1m1⋅m2=−1
3. Midpoint of a Line
Formula: