<prompt> Translate the following text to EnglishIngawa Picha 2 inaonyesha familia ya curves jumla ya gharama, Picha 1 inaonyesha moja curve ya gharama ya kitengo kwa sababu curve ya gharama ya kitengo inategemea moja tu variable, vipande kwa kila mtu.  <response>: Although Figure 2 shows a family of total costs curves, Figure 1 displays a single unit cost curve because the unit cost curve depends on only one variable, pieces per capita. 