The graphing of a ratio includes one axis representing part A of the ratio and the other axis representing part B of the ratio. for example, if you have 20 defects per 100 parts of a car, the defects would be represented as part a and the total parts would be represented by part b. These graphs show one part on the left hand and the other on the bottom of the graph, and the graphing of each ratio acts a lot like graphing an equation you would normally see.