All else being equal, an increase in variable cost per unit would have which of the following effects on a cost-volume-profit ("CVP") graph ? The total cost line would shift upwards and the break-even point would rise. The slope of the total cost line would steepen and the break-even point would fall. The slope of the total cost line would flatten and the break-even point would rise. The total cost line would shift downwards and the break-even point would fall. The slope of the total cost line would steepen and the break-even point would rise