Cho hàm số y = 3a+2 tìm a biết f(1) = 4

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IX. Read the following passage and answer the questions. The Hue Festival is a biennial cultural event celebrated in even years in order to honour Hue's cultural heritages as well as Viet Nam's national identity towards people from all over the world. With a quite long history since 1992, each time of celebration is distinctive festive theme, which never fails to draw attractions from millions of visitors. Undoubtedly, at present, the Hue Festival is among the most expected events of this tranquil City. In 2000, the event attained its official name 'Hue Festival' as today. In this special event, a wide variety of traditional activities of Viet Nam such as calligraphy exhibition, kites playing and human chess playing are conducted. Also, re creations of special events are carried out, such as the occasion of Nguyen Hue's enthronement and Nguyen Dynasty's Doctorial examinations, and performances of dance and fireworks are included. The festival aims at promoting several kinds of arts as well, with the participation of over 40 art companies from both Viet Nam and foreign countries. From all over the world, thousands of artists gather at Hue to demonstrate their talents, delivering exhibitions, fairs, and competitions to over 40 venues throughout the City. 1. How often is the Hue Festival celebrated? 2. When did the Hue Festival obtain its official name as today? 3. Name one traditional activity which is conducted at the Hue Festival. 4. What does the Hue Festival aim at? The tectiva Lom ot premoting 5. What do artists from all over the world gather at Hue for?