Final answer:
The $10,000 used by a business owner as a down payment for business property is considered owner's equity, as it represents the owner's investment in the business.
Step-by-step explanation:
If a business owner uses $10,000 of his personal money as a down payment on the purchase of a property for the business, that $10,000 would be considered owner's equity. Owner's equity represents the owner's investment in the business and is reflected on the company's balance sheet as part of equity. This scenario is related to how individuals can use their personal resources to finance business activities, similar to how one might use personal funds for a down payment on a house. In this example, the money contributed by the owner increases their claim or equity in the business rather than being classified as revenue, asset, or liability.