📚 Year 9 Edexcel Business: Formula & Theorem Quick Reference Guide | Year 9 Edexcel 商务：公式定理速查手册
This quick reference guide collects the key formulas, models and principles you need to master in Year 9 Edexcel Business. Use it to revise revenue, costs, profit, break‑even, cash flow and the essential theories that explain how businesses operate.
本速查手册汇集了 Year 9 Edexcel 商务课程中必须掌握的核心公式、模型和原理。你可以用它来复习收入、成本、利润、盈亏平衡、现金流以及解释企业运作方式的重要理论。
1. Revenue, Costs & Profit | 收入、成本与利润
A business earns revenue from selling goods or services. Total revenue depends on the selling price and the number of units sold. It is the simplest way to measure the money coming into a business.
企业通过销售商品或服务获得收入。总收入取决于销售价格和销售数量，是衡量企业资金流入的最基本指标。
Total Revenue (TR) = Selling Price (P) × Quantity Sold (Q)
总收入 = 销售单价 × 销售数量
Costs are divided into fixed costs and variable costs. Fixed costs do not change with output (e.g. rent), while variable costs rise as production increases (e.g. raw materials). Total cost is the sum of the two.
成本分为固定成本和可变成本。固定成本不随产量变化（如租金），可变成本随产量增加而上升（如原材料）。总成本是两者之和。
Total Costs (TC) = Fixed Costs (FC) + Variable Costs (VC)
总成本 = 固定成本 + 可变成本
hat remains when total costs are subtracted from total revenue. It shows how much money the business keeps.
可变成本也可按单位计算：总可变成本 = 单位可变成本 × 数量。利润是总收入扣除总成本后的剩余部分，反映企业实际赚到的钱。
Profit = Total Revenue – Total Costs
利润 = 总收入 – 总成本
2. Contribution & Break-even Analysis | 贡献与盈亏平衡分析
Contribution measures how much each unit sold contributes towards fixed costs and profit, after variable costs are covered. The contribution per unit is a key figure in break‑even analysis.
贡献衡量每售出一个产品在覆盖可变成本后能为固定成本和利润做出的贡献。单位贡献是盈亏平衡分析中的关键数据。
Contribution per unit = Selling Price – Variable Cost per unit
单位贡献 = 销售单价 – 单位可变成本
Total contribution is found by multiplying the contribution per unit by the number of units sold. This shows the total amount available to pay fixed costs and then generate profit.
总贡献等于单位贡献乘以销售数量，表示可用于支付固定成本并创造利润的总额。
Total Contribution = Contribution per unit × Quantity Sold
总贡献 = 单位贡献 × 销售数量
The break‑even point is the level of output where total revenue equals total costs. At this point the business makes neither a profit nor a loss. It can be expressed in units or in revenue.
盈亏平衡点是指总收入等于总成本的产量水平，此时企业既不盈利也不亏损。盈亏平衡点可用产量或收入表示。
Break‑even Point (units) = Fixed Costs ÷ Contribution per unit
盈亏平衡产量 = 固定成本 ÷ 单位贡献
Break‑even Revenue = Break‑even Point (units) × Selling Price
盈亏平衡收入 = 盈亏平衡产量 × 销售单价
The margin of safety shows how far actual output can fall before the business reaches the break‑even point. A larger margin of safety means lower risk.
安全边际表示实际产量可以在跌至盈亏平衡点之前下降的幅度。安全边际越大，风险越低。
Margin of Safety = Current Output – Break‑even Output
安全边际 = 当前产量 – 盈亏平衡产量
3. Profit Margins | 利润率
Profit margins help compare profitability across different businesses or time periods. They show the percentage of revenue that turns into profit. Gross profit margin uses gross profit, which is revenue minus the cost of sales.
利润率有助于比较不同企业或不同时期的盈利水平，它反映了收入转化为利润的百分比。毛利率采用毛利，即收入减去销售成本。
Gross Profit = Revenue – Cost of Sales
毛利 = 收入 – 销售成本
Gross Profit Margin (%) = (Gross Profit ÷ Revenue) × 100
毛利率 = (毛利 ÷ 收入) × 100
Net profit is the final profit after all other expenses, such as wages, rent and interest, have been deducted. Net profit margin reveals the overall efficiency of a business.
净利润是扣除工资、租金和利息等所有其他支出后的最终利润。净利润率体现企业的整体经营效率。
Net Profit = Gross Profit – Other Operating Expenses and Overheads
净利润 = 毛利 – 其他运营费用和间接费用
Net Profit Margin (%) = (Net Profit ÷ Revenue) × 100
净利润率 = (净利润 ÷ 收入) × 100
4. Cash Flow | 现金流
Cash flow is the movement of money into and out of a business. Positive cash flow means more money is coming in than going out, which is vital for survival. Net cash flow is the simplest measure.
现金流指资金进出企业的流动。正向现金流意味着流入资金大于流出资金，这对企业生存至关重要。净现金流是最简单的衡量指标。
Net Cash Flow = Total Cash Inflows – Total Cash Outflows
净现金流 = 现金流入总额 – 现金流出总额
To forecast the cash position, businesses use an opening balance and add the net cash flow for the period. The result is the closing balance, which becomes the next period's opening balance.
在预测现金状况时，企业使用期初余额加上当期净现金流，得出期末余额，该余额将成为下一期的期初余额。
Closing Balance = Opening Balance + Net Cash Flow
期末余额 = 期初余额 + 净现金流
5. Key Business Objectives | 关键企业目标
Business objectives are the goals a business sets to guide its decisions. Common objectives include survival (especially for start‑ups), maximising profit, growth, increasing market share and acting in a socially responsible way.
企业目标是企业为指引决策而设定的目标。常见目标包括生存（尤其对初创企业）、利润最大化、增长、扩大市场份额以及承担社会责任。
A new enterprise often focuses on survival and establishing a customer base. As it matures, objectives may shift towards profit and expansion. Social objectives are increasingly important for brand reputation.
新企业通常专注于生存和建立客户基础。随着企业成熟，目标可能转向盈利和扩张。社会责任目标对品牌声誉日益重要。
These objectives are not purely financial: they shape marketing, operations and human resource decisions across the entire organisation.
这些目标不仅是财务方面的，它们还影响着整个组织的营销、运营和人力资源决策。
6. Stakeholders | 利益相关者
Stakeholders are individuals or groups with an interest in the activities and success of a business. They can be internal (owners, managers, employees) or external (customers, suppliers, government, local community).
利益相关者是对企业活动和成败有利益关系的个人或群体。他们可以是内部（所有者、经理、员工）或外部（顾客、供应商、政府、当地社区）的。
Different stakeholders often have conflicting interests. For example, owners may want higher profits, while employees want higher wages and customers want lower prices. Managing these conflicts is a key business skill.
不同利益相关者常有利益冲突。例如所有者希望更高利润，而员工想要更高工资，顾客希望更低价格。协调这些冲突是重要的商业技能。
Understanding stakeholder needs helps a business make ethical choices and improve its long‑term reputation.
理解利益相关者的需求有助于企业做出合乎道德的选择，提升长期声誉。
7. Business Ownership Types | 企业所有权类型
The legal structure of a business affects liability, taxation and the ability to raise finance. Year 9 students should recognise the main forms of ownership and their key features.
企业的法律结构影响其责任、税务和融资能力。Year 9 学生需要识别主要的所有权形式及其关键特征。
| Type 类型 | Liability 责任 | Key Characteristics 特点 |
|---|---|---|
| Sole Trader 个人经营者 | Unlimited 无限责任 | Single owner; full control; keeps all profits; easy to set up |
| Partnership 合伙企业 | Unlimited (usually) 通常无限 | 2 or more owners; shared profits and decisions; deed of partnership |
| Private Limited Company (Ltd) 私人有限公司 | Limited 有限 | Owned by shareholders; shares cannot be sold publicly; separate legal identity |
| Public Limited Company (plc) 公众有限公司 | Limited 有限 | Shares traded on stock exchange; can raise large capital; more regulation |
| Franchise 特许经营 | Varies 视情况 | Franchisee pays fees to use an established brand and business model |
Unlimited liability means the owners are personally responsible for all business debts, while limited liability protects personal assets beyond what has been invested.
无限责任意味着所有者需以个人财产承担全部企业债务，有限责任则保护超出投资额以外的个人资产。
8. The Marketing Mix | 营销组合
The marketing mix is a set of controllable tools a business uses to influence customers. The classic 4Ps model is the foundation of marketing decisions.
营销组合是企业用来影响顾客的一系列可控工具。经典的4Ps模型是营销决策的基础。
- Product – the good or service offered, including design, quality and features.
- 产品 – 提供的商品或服务，包括设计、质量和功能。
- Price – the amount customers pay; must cover costs and attract buyers.
- 价格 – 顾客支付的金额；既要覆盖成本又要吸引购买。
- Place – the distribution channels and locations where the product is available.
- 渠道 – 产品可获得的流通渠道和销售地点。
- Promotion – communication methods such as advertising, sales promotions and social media.
- 促销 – 广告、销售推广和社交媒体等沟通方式。
When the four elements are coordinated effectively, the business creates a strong value proposition for its target market.
当这四个要素有效协同时，企业就能为目标市场打造强大的价值主张。
9. Maslow’s Hierarchy of Needs | 马斯洛需求层次理论
Maslow’s theory explains human motivation in a five‑level pyramid. It is used in business to understand employee motivation and customer behaviour.
马斯洛的理论用一个五层金字塔解释人类动机，在商务中用于理解员工激励和顾客行为。
From the most basic to the most advanced, the levels are:
从最基本的到最高级的层次依次是：
Physiological – basic needs such as food, water and rest.
生理需求 – 食物、水和休息等基本需要。
Safety – security, health and a stable income.
安全需求 – 人身安全、健康和稳定收入。
Social/Belonging – friendship, teamwork and acceptance.
社交/归属需求 – 友谊、团队合作和被接纳。
Esteem – recognition, respect and achievement.
尊重需求 – 认可、尊重和成就。
Self‑actualisation – achieving one's full potential and personal growth.
自我实现 – 充分发挥潜能和个人成长。
The theory suggests lower‑level needs must be reasonably satisfied before higher needs drive behaviour. Businesses apply this when designing reward systems, for instance offering security through permanent contracts and esteem through promotion opportunities.
该理论认为较低层次的需求必须得到合理满足后，更高需求才能驱动行为。企业在设计奖励制度时应用此理论，例如通过永久合同提供安全感，通过晋升机会提供尊重感。
10. Business Sectors & Factors of Production | 商业部门与生产要素
The economy is divided into three sectors representing different stages of production. The primary sector extracts raw materials, the secondary sector manufactures goods, and the tertiary sector provides services.
经济分为三个部门，代表不同的生产阶段：初级部门开采原材料，二级部门制造商品，三级部门提供服务。
As a country develops, employment typically shifts from primary to secondary and then to tertiary activities. Many modern businesses operate in the tertiary sector.
随着国家发展，就业通常从初级转向二级，再转向三级活动。许多现代企业都运营在三级部门。
All production relies on four factors of production, often remembered as the 'four Ms' or CELL in economics:
所有生产都依赖四种生产要素，常被记为'四个要素'或经济学中的CELL：
Land – natural resources such as land, water and minerals.
土地 – 土地、水和矿物等自然资源。
Labour – the human effort, skills and knowledge used in production.
劳动 – 用于生产的人力、技能和知识。
Capital – man‑made resources such as machinery, tools and buildings.
资本 – 机器、工具和厂房等人造资源。
Enterprise – the ability to bring the other factors together, take risks and innovate.
企业精神 – 整合其他要素、承担风险并进行创新的能力。
These concepts help explain the basic building blocks of any business activity.
这些概念有助于解释任何商业活动的基本构成要素。
Published by TutorHao | Business Revision Series | aleveler.com
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