Linear equations are the simplest kind of equations you come across in maths. R x selling price number of items sold profit equals revenue less cost. A linear supply curve can be plotted using a simple equation P a bS a plots the starting point of the supply curve on the Y-axis intercept.
We all solve linear equations in our heads all the time without even noticing it.
A linear equation is. This allows us to create what we call two ordered pairs x 1y 1 and x 2 y 2. A simple example of addition of linear equations. Note that each of these pairs represents the x and y coordinates of a point in the supply and demand diagram.