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.
Pieces per capita is part of some of the variables in these figures.
mnli hypothesis: Pieces per capita is part of some of the variables in these figures. premise: 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.