Working with the general equation of a straight line, 𝑦 = 𝑚𝑥 + 𝑐, use the interactive activity to see what a graph looks like when plotted. Select values for 𝑚, the gradient, and ...

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 ...