The __________ property of linear programming models indicates that the rate of change orslope of the objective function or a constraint is constant.

	a.	Proportionality
	b.	Additivity
	c.	Divisibility
	d.	Certainty
	e.	Feasibility

_____________ techniques include uncertainty and assure that there can be more than one model solution.

	a.	Deterministic
	b.	Probabilistic
	c.	Distribution
	d.	Probability

A decrease in fixed costs with everything else remaining constant:

	a.	does not affect the break-even point
	b.	keeps the break-even point at the same level
	c.	Increases the Break-even point
	d.	Decreases the break-even point