質問: what does 包丁と箸だけを使って表現している図 mean? what does 包丁と箸だけを使って表現している図 mean?
回答: this sentence doesn't say its object, so there's no clue what the diagram shows. i'd say 包丁と箸だけを使って描かれた図, which means 'a diagram that is composed of the pictures of knives and chopsticks.