Find the direction vector for the line joining the points 
and 
.
Definitions:
Legislation
Laws enacted by a legislative body, such as parliament or congress, to govern a specific area of concern.
Binding
Creating a legal obligation or a contract that is enforceable in a court of law.
Contract
A legally binding agreement between two or more parties that outlines obligations and rights with respect to services, products, or transactions.
Writing
The act or process of creating symbols such as letters or numbers on a surface to communicate or record information.
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