2011年ACCA考试《F5业绩管理》讲义（39）
4 straight-line demand equation the equation of a straight line demand curve is represented by the following equation:http://www.examw.com/acca/Files/2011-8/10/1.jpg
Illustration 5 – Straight-line demand equation
Required:www.Examw.com
Find the linear relationship between price (P) and the quantity demanded (Q) in relation to the following sales and demand data:
§ Selling price of $200 = sales of 1,000 units per month
§ Selling price of $220 = sales of 950 units per month.
Solution
§ b (gradient) =http://www.examw.com/acca/Files/2011-8/10/2.jpg
= -0.4
§ remembering that price (P) = 200 when 1000 units are sold and substituting 2 0.4 for b
§ 200 = a 2 (0.431,000)
§ 200 = a 2 400
§ a = 200 + 400 = 600
§ so the equation is: P = 600 – 0.4Q
Test your understanding 3来自www.Examw.com
Finding the linear relationship between price (P) and the quantity demanded (Q) in relation to the following sales and demand data:
§ Selling price of $300 = sales of 500 units per month
§ Selling price of $330 = sales of 400 units per month.
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