Equation of a Straight Line
You will probably recognise the most commonly used form of the equation of a straight line: y=mx+c where m represents the gradient and c represents the y-intercept. It is important not to overlook this topic, as it comes up a lot in work on Functions, Vectors and Calculus. Make sure that you can use all three forms of the equation of a straight line, as this will help you with the Equation of Tangent and Normal Key...