You will often find that you need to find the equation of a line given a point on the line and the gradient.

Rule to remember:

  • y – y1 = m (x – x1)
Equation of a line (alternative form) : ExamSolutions Maths Revision - youtube Video

Comparing y=mx+c to this new method

Equation of a line : Comparing methods : ExamSolutions Maths Revision - youtube Video