Common Types of Straight Line Graphs
Part of Straight Line Graphs · GCSE GCSE Mathematics revision
This deep dive covers Common Types of Straight Line Graphs within Straight Line Graphs for GCSE Mathematics. Revise Straight Line Graphs in Graphs for GCSE Mathematics with 14 exam-style questions and 20 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 7 of 8 in this topic. Use this deep dive to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 7 of 8
Practice
14 questions
Recall
20 flashcards
Common Types of Straight Line Graphs
| Type | Equation Form | Example | Key Features |
|---|---|---|---|
| Through origin | y = mx | y = 3x | Passes through (0, 0) |
| Horizontal line | y = c | y = 5 | Gradient = 0, parallel to x-axis |
| Vertical line | x = c | x = 3 | Undefined gradient, parallel to y-axis |
| Positive gradient | y = mx + c (m > 0) | y = 2x + 1 | Line slopes upward left to right |
| Negative gradient | y = mx + c (m < 0) | y = -x + 3 | Line slopes downward left to right |
Keep building this topic
Read this section alongside the surrounding pages in Straight Line Graphs. That gives you the full topic sequence instead of a single isolated revision point.
Practice Questions for Straight Line Graphs
A straight line has the equation y = 3x + 7. What is the gradient of this line?
Line A has equation y = 3x + 1. Line B has equation y = 3x - 5. Explain why lines A and B are parallel. Include the values of their gradients in your answer.
Quick Recall Flashcards
14 questions on Straight Line Graphs — practise free
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