Common
AlgebraWorksheet · Common
Equation of a line through two points
The gradient from the two points, substitute one to find c, write y = mx + c and check with the other. Two to a page, to stick in books.
A free GCSE Foundation and Higher algebra walkthrough, spec code A9. It goes with the lesson on the equation of a line from its graph.
Lesson
The equation of a line from its graph
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