The seven propositions are:
- Legislature’s intention is the determining factor for separability.
- If valid and invalid provisions are inextricably mixed, the entire Act is invalid. If distinct and separate, the valid part stands.
- If valid and invalid provisions form part of a single scheme intended to be operative as a whole, the entire Act fails.
- If the valid part, after omitting the invalid portion, is too thin or truncated, the entire Act is rejected.
- Separability depends on substance, not form (section or different section).
- If the invalid portion cannot be expunged without alterations or modifications, the whole Act must be struck down.
- Legislative history, object, title, and preamble can be taken into account to determine legislative intent.