To determine which graph shows a lower unit cost, I need more information about what the graphs represent. Typically, a graph showing unit costs would have one axis representing quantity (x-axis) and the other representing total cost (y-axis). The slope of the line would indicate the unit cost—specifically, the steeper the slope, the higher the unit cost, and vice versa.
If you can provide information on the lines or curves shown in graphs 1 and 2, including their slopes or any numerical values they may represent, I can help you analyze which one corresponds to the lower unit cost.