Explain how you would model 5 x 2/3. (don't understand what they mean by model)

You are assembling pieces of an iron gate to complete a fence. the finished gate will look like the one below. in order to assemble the gate it is important to under how the pieces are related. part 1: how are pies 1 and 2 in the archway related? part 2: how are the rectangular sections 5 and 6 in the center of the gate related to each other?

Which ahows the graph of the solution set of 6x+4y< 12

Can someone me with this problem . show your work .