Cho hàm số y=(8m - 16)x+21

a) Tìm m để hàm số đã cho là hàm số bậc nhất ?

b) Tìm m để hàm số đồng biến ?

c)Tìm m để hàm số nghịch biến ?

Cho dạng đúng của các từ trong ngoặc

8. Sony is a big firm which is _____ in Vietnamese’s market. COMPETE

9. Doctors and _____ have reported on how we are all affected by the noise around us. SCIENCE

10. The _____ between Vietnam and China is recovered. FRIEND

11. The boss refused to meet the Union’s _____. DELEGATE

12. Many _____ activities will be held tomorrow. CULTURE

13. She _____ with me for an hour about the future job yesterday. REASON

14. The _____ of the moon for the earth causes the tides. ATTRACT

15. Our team played _____. We lost. SUCCESS

16. It is said that Hue is a _____ city. PEACE

17. He came first in the _____.COMPETE

18. Good _____were the keys to the success of the 23th Sea Games. PREPARE

19. We are _____ interested in AIDS. ESPECIAL

20. Women have to keep their _____.GENTLE

Cho dạng đúng của các từ trong ngoặc

6. The other _____ admired him. COMPLETE

7. We can only get their by plane. There is no _____.CHOOSE

8. Sony is a big firm which is _____ in Vietnamese’s market. COMPETE

9. Doctors and _____ have reported on how we are all affected by the noise around us. SCIENCE

10. The _____ between Vietnam and China is recovered. FRIEND

11. The boss refused to meet the Union’s _____. DELEGATE

12. Many _____ activities will be held tomorrow. CULTURE

13. She _____ with me for an hour about the future job yesterday. REASON

14. The _____ of the moon for the earth causes the tides. ATTRACT

15. Our team played _____. We lost. SUCCESS

16. It is said that Hue is a _____ city. PEACE

17. He came first in the _____.COMPETE

18. Good _____were the keys to the success of the 23th Sea Games. PREPARE

19. We are _____ interested in AIDS. ESPECIAL

20. Women have to keep their _____.GENTLE

Cho dạng đúng của các từ trong ngoặc

1. The old man walked _____ to the park. SLOW

2. The author’s _____ is communicated through his song. HAPPY

3. We find Huong very _____.COMMUNICATE

4. They went to see most of the __________places. INTEREST

5. His sudden _____ must be a shock to her and her family. DIE