- linear cost function
- Cost behaviour that, when plotted on a graph against activity levels, results in a straight line. For example, total fixed cost levels and variable costs per unit of activity will both result in a straight line horizontal to the
*x*-axis when activity, production, or sales is plotted on the*x*-axis. Total variable costs will also result in a straight line and is thus a linear cost function.

*Accounting dictionary.
2014.*

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