The poverty line is not the same in all countries. It can be decided by the economy. In the United States, the poverty line is different depending on how many people there are in a family. This is because it costs more to buy food and supplies for more people. So, for example, it is higher in a family with eight people than in a family with three people. The poverty line also makes sure the poor and rich are separated immensely. If there were not a poverty line, the distribution of goods to those of whom are actually poor, would decrease. 