Are the four (or five) rules of validity used to confirm validity or invalidity?

Question

Quizplus · Accepted Answer

The four (or five) rules of validity can always be used to confirm either validity or invalidity of an argument. By applying these rules, we can determine whether the conclusion logically follows from the premises or not. If the argument satisfies these rules, then it is valid, and the conclusion necessarily follows from the premises. If the argument violates any of the rules, then it is invalid, and the conclusion does not necessarily follow from the premises. Therefore, the rules can be used to confirm either validity or invalidity.

Are the Four (Or Five) Rules of Validity Used to Confirm