This key facts covers Key Methods within Coordinates for GCSE Mathematics. Revise Coordinates in Graphs for GCSE Mathematics with 10 exam-style questions and 20 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 5 of 7 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 5 of 7
Practice
10 questions
Recall
20 flashcards
Key Methods
Reading Coordinates
Always read coordinates as (x, y):
- Start from the origin (0, 0)
- Move horizontally by the x-value (right if positive, left if negative)
- Move vertically by the y-value (up if positive, down if negative)
- Mark the point
Distance Between Points
For points A(x₁, y₁) and B(x₂, y₂):
Distance = √[(x₂ - x₁)² + (y₂ - y₁)²]
Midpoint Formula
For points A(x₁, y₁) and B(x₂, y₂):
Midpoint = ((x₁ + x₂)/2, (y₁ + y₂)/2)