Learn about graphing linear equations. A linear equation is an equation whose highest exponent on its variable(s) is 1. i.e., linear equations have no exponents on their variables. The graph of a ...

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 ...

Learn about solving a system of equations by graphing. A system of equations is a set of more than one equation that is to be solved simultaneously. To solve a system of equations graphically, we ...