We can calculate the gradient of a tangent to a curve by differentiating. In order to find the equation of a tangent, we: Differentiate the equation of the curve Substitute the \(x\) value into ...

Find the equation of the line of symmetry and the coordinates ... so the graph will be a positive U-shaped curve. Writing \(y = x^2 – 6x + 4 \) in completed square form gives \(y = (x ...