How to derive the equation of a straight line from two coordinates
In short: Master the three-step method to find the equation of any straight line. This video demonstrates how to calculate the gradient and y-intercept to complete the y = mx + c formula.
The video presents a systematic approach for students preparing for 2026/27 GCSE exams. It covers the process of calculating the gradient (m) first, then substituting that value alongside one known coordinate to solve for the y-intercept (c).
Through two worked examples, the tutorial shows how to assemble these components into the final equation. The method is applicable to both GCSE Foundation and Higher tier courses globally.
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Sources
- Summary by Intellect · source: GCSE Maths - Finding the Equation of a Straight Line From 2 Sets of Coordinates (2026/27 exams)
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