Infоrmаtiоn fоr questions 14-15 Consider the stаndаrd model of international trade. Two countries, A and B, produce goods x and y. Country A exports good x. If we were to plot their PPFs, good x is plotted on the horizontal axis and good y on the vertical axis (duh). We can also plot the relative supply curve and the relative demand curve for the two countries, with Px/Py on the vertical axis and Qx/Qy on the horizontal axis, such as shown in class. Suppose that the relative supply curve becomes vertical above a certain price ratio. The price ratio where this will happen is a price ratio that: