Please state what each grapoh represents

The following are 12 cost behaviour graphs. The total cost is shown on the y-axis and the volume (activity) is shown on the x-axis. (Click the icon to view the graphs.) For each of the following situations, identify the graph that most closely represents the cost behaviour pattern of the cost in that situation. Some graphs may be used more than once or not at all. a. Straight-line depreciation of equipment (based on years of life) 1 2 3 un 5 6 6 un 6 7 8 9 10 11 12