This key facts covers Gradient and Intercept Essentials within Gradient & Intercept for GCSE Mathematics. Revise Gradient & Intercept 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 2 of 9 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Gradient and Intercept Essentials
- Gradient: The steepness of a line, calculated as rise/run
- Y-intercept: Where the line crosses the y-axis (when x = 0)
- X-intercept: Where the line crosses the x-axis (when y = 0)
- Positive gradient: Line goes upward (↗)
- Negative gradient: Line goes downward (↘)
- Zero gradient: Horizontal line (—)
Practice questions for Gradient & Intercept
The gradient of a straight line is calculated by:
A graph shows the distance (km) travelled by a car plotted against time (hours). The line has gradient 80. What does the gradient represent in this context?
Quick recall flashcards
What is the x-intercept?
The point where a line crosses the x-axis. Found by setting y = 0.
What is the y-intercept?
The point where a line crosses the y-axis. Found by setting x = 0.