The display shows in blue the straight line graph of the equation y = mx+c.
You can alter this graph by using the sliders to change the values of m and c.
Choose a red graph:
Now use the sliders to match the lines.
You can alter this graph by using the sliders to change the values of m and c.
Choose a red graph:
Now use the sliders to match the lines.
Software/Applets used on this page

This page uses JSXGraph
JSXGraph is a cross-browser library for interactive geometry, function plotting, charting, and data visualization in a web browser. It is implemented completely in JavaScript, does not rely on any other library. It uses SVG and VML and is fully HTML5 compliant.
JSXGraph is a cross-browser library for interactive geometry, function plotting, charting, and data visualization in a web browser. It is implemented completely in JavaScript, does not rely on any other library. It uses SVG and VML and is fully HTML5 compliant.
Glossary
equation
A statement that two mathematical expressions are equal.
function
A rule that connects one value in one set with one and only one value in another set.
graph
A diagram showing a relationship between two variables.
The diagram shows a vertical y axis and a horizontal x axis.
The diagram shows a vertical y axis and a horizontal x axis.
plot
To mark a point on a graph accurately by using its coordinates.
straight
The type of line produced by a linear equation.
This question appears in the following syllabi:
Syllabus | Module | Section | Topic | Exam Year |
---|---|---|---|---|
AQA GCSE (9-1) Foundation (UK) | A: Graphs | A9: Plotting Straight-Line Graphs | Straight-Line Graphs | - |
CBSE IX (India) | Algebra | Polynomials | Constant, linear, quadratic and cubic | - |
CBSE XI (India) | Coordinate Geometry | Straight Lines | General equation of a line | - |
CIE IGCSE (9-1) Maths (0626 UK) | 5 Co-ordinate Geometry | B5.4 Equations of Straight Lines | Straight-Line Graphs | - |
Edexcel GCSE (9-1) Foundation (UK) | A: Graphs | A9: Plotting Straight-Line Graphs | Straight-Line Graphs | - |
GCSE Foundation (UK) | Algebra | Graphs | The straight line graph | - |
GCSE Higher (UK) | Algebra | Graphs | The straight line graph | - |
OCR GCSE (9-1) Foundation (UK) | 7: Graphs of Equations and Functions | 7.02a: Straight Line Graphs | Straight-Line Graphs | - |
Universal (all site questions) | G | Graphs | The straight line graph | - |