MA15-06 Maths Coming soon
Finding the Equation of a Straight Line
MA15-06
This lesson is coming soon.
In this lesson
Find the equation of a straight line, in the form y = mx + c, given its graph, two points it passes through, or a point and its gradient.
What it covers
- The three-step method: find the gradient, substitute a known point into y = mx + c, solve for c
- Applying the method from a graph, from two given points, or from a point and gradient
- Handling negative coordinates correctly at each step of the method
Key words
For: AQA GCSE 8300, Edexcel GCSE 1MA1, Eduqas GCSE C300, OCR GCSE J560, Cambridge IGCSE 0580
On the specification
| Board | Spec | Statement |
|---|---|---|
| AQA GCSE 8300 | A9 | Plot graphs of equations that correspond to straight-line graphs in the coordinate plane |
| Edexcel GCSE 1MA1 | A9 | Plot graphs of equations that correspond to straight-line graphs in the coordinate plane; use the form y = mx + c to identify parallel lines; find the equation of the line through two given points or through one point with a given gradient |
| Eduqas GCSE C300 | FA9 | Plot graphs of equations that correspond to straight-line graphs in the coordinate plane; use the form y = mx + c to identify parallel lines; find the equation of the line through two given points, or through one point with a given gradient |
| Eduqas GCSE C300 | HA9 | Plot graphs of equations that correspond to straight-line graphs in the coordinate plane; use the form y = mx + c to identify parallel and perpendicular lines; find the equation of the line through two given points, or through one point with a given gradient |
| OCR GCSE J560 | 7.02a | Find and interpret the gradient and intercept of straight lines, graphically and using y = mx + c . |
| Cambridge IGCSE 0580 | C3.5 | Interpret and obtain the equation of a straight-line graph in the form y = mx + c. |
| Cambridge IGCSE 0580 | E3.5 | Interpret and obtain the equation of a straight-line graph. |
For teachers
This GCSE Maths lesson teaches finding the equation of a straight line. By the end, students should be able to find the equation of a straight line, in the form y = mx + c, given its graph, two points it passes through, or a point and its gradient. It works through two worked examples and the mistakes examiners report.