In analyzing cost behavior: Y = a + bx, what does the slope of "b" represent for? of 3 Select one: a. Variable costs in total, b. Fixed costs per unit. c. Fixed costs in total. d. Variable costs per unit. 8 3 The break-even point is where: at of 3 Select one: a. Total variable costs equal sales. b. Total contribution margin equals total fixed costs. c. Total variable costs equal total fixed costs. d. Total contribution margin equals total variable costs. O