Learn how to find equations of parallel lines, work out the gradient of perpendicular lines, ... For example, 4 is the coefficient of 4n². of 𝑥.

Parallel lines - Intermediate and Higher tier Lines which are parallel have the same gradient . For example, \(\text{y = 2x + 1}\) and \(\text{y = 2x - 2}\) will be parallel because they both have ...