Answer:
Here I am assuming you mean the subject by "noun". If it means the direct object, then whatever comes after "is the" is the noun.
6. Mr Jackson is the noun, who helped me with my math problems is the adjective clause.
7. The bad weather is the noun, why i decided to drive instead of walk is the adjective clause.
8. Min is the noun, whose family owns a horse ranch is the adjective clause.
9. you are the noun, when we almost missed the swim meet is the adjective clause.
