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 how to write the equation of a line in a point-slope form. The equation of a line is such that its highest exponent on its variable(s) is 1. (i.e. there are no exponents in its variable(s)).

In this video series, I show you how to solve a system of equations by graphing. When solving a system of equations by graphing, we graph each equation separately and then analyze where the two lines ...