YouTube on MSNOpinion

Learn how to write the equation of a tangent line through a point of a function

👉 Learn how to find and write the equation of the tangent line of a curve at a given point. The tangent of a curve at a ...
BBC

Equations of parallel and perpendicular lines

Higher - The gradients of two perpendicular lines will always multiply to make –1. Make sure you are familiar with finding the equation of a line and calculating gradient to understand equations of ...