Cho hàm số 𝑦 = 𝑎𝑥 + 2. Biết rằng điểm 𝐴(2; 10) nằm trên đồ thị hàm số. a) Tìm 𝑎 b) Tìm tọa độ giao điểm của đồ thị hàm số với trục tung và trục hoành c) Tính khoảng cách từ điểm 𝑂, gốc tọa độ, đến đường thẳng (𝑑), đồ thị của hàm số. 2. Cho đường thằng: 𝑦 = (𝑚 + 1)𝑥 + 3𝑚 − 1 (𝑑) với 𝑚 ≠ −1 a) Chứng minh rằng đường thẳng (𝑑) luôn đi qua một điểm cố định với mọi giá trị của 𝑚 b) Tính giá trị của 𝑚 để đường thẳng 𝑑 tạo với các trục tọa độ một tam giác có diện tích bằng 2. 3. Cho hàm số 𝑦 = (2𝑚 + 1)𝑥 + 4𝑚 − 5 (𝑑) với 𝑚 ≠ −1/2 a) Chứng minh rằng đường thẳng (𝑑) luôn đi qua một điểm cố định với mọi giá trị của 𝑚. b) Chứng minh rằng khoảng cách từ gốc tọa độ đến đường thẳng (𝑑) không vượt quá √53 ai giỏi toán giúp em với ạ em cám ơn

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TEST 3 June 2th, 2017 1. Where ___________you (live)____________? I (live)______________in Hai Duong town. 2. What _______________he (do) ______________now? He (water)___________flowers in the garden. 3. What _______________she (do)_____________? She (be)______________a teacher. 4. Where _________________you (be) from? 5. At the moment, my sisters (play)_________volleyball and my brother (play)________________soccer. 6. It is 9.00; my family (watch)___________________TV. 7. In the summer, I usually (go)_________to the park with my friends, and in the spring, we (have) _________Tet Holiday; I (be)________happy because I always (visit) ______________my granparents. 8. ____________your father (go)_____________to work by bus? 9. How ___________your sister (go)___________to school? 10. What time _____________they (get up)_________________? 11. What ____________they (do)________________in the winter? 12. Today, we (have)______________English class. 13. Her favourite subject (be)__________________English. 14. Now, my brother (like)_________________eating bananas. 15. Look! Aman (call)_________________you. 16. Keep silent ! I (listen )____________________to the radio. 17. ______________ you (play)_________________badminton now? 18. Everyday, my father (get up)__________at 5.00 a.m, but today, he (get up) ____________ at 6.00 am. 19. Every morning , I (watch)_______tv at 10.00, but today I (Listen ) ____________ to music at 10.00. 20. Everyday , I (go) __________to school by bike but today I go to school by motorbike. 21. Every morning, my father (have) _________a cup of coffe but today he (drink)______________ milk. 22. At the moment, I(read)_______________a book and my brother (watch)_______ TV. 23. Hoa (live)________________in Hanoi ,and Ha (live)________________in HCM City. 24. Hung and his friend (play)_______________badminton. 25. They usually (get up)___________________at 6.oo in the morning. 26. Ha never (go)___________fishing in the winter but she always (do)_____________ it in the summer. 27. My teacher (tell)__________________Hoa about Math. 28. There (be)____________________ animals in the circus. 29. _______________he (watch)______________TV at 7.00 every morning? 30. What _____________she (do ) _________________at 7.00 am? 31. How old _________she (be)? 32. How ___________she (be)? 33. My children (Go)________________to school by bike. 34. We (go)_______________to supermarket to buy some food. 35. Mr. Hien (go)________________on business to Hanoi every month. 36. Ha (like)______________coffee very much, but I (not like)______________it. 37. She (like )________________Tea, but she (not like)____________________coffee. 38. I (love)_______________ cats, but I (not love)__________________dogs. 39. Everyday ,I (go)______________to school on foot, but today I (go)______________to school by bike. 40. Who you _________________(wait) for Nam? -No, I _____________________(wait) for Mr. Hai. 41. My sister (get)______________ dressed and (brush)____________her teeth herself at 6.30 everyday. 42. Mrs. Smith (not live)_______in downtown. She (rent)_____________in an appartment in the suburb. 43. How _________your children (go)_________________to school everyday? 44. It’s 9 o’clock in the morning. Lien (be)________in her room. She (listen) _______________to music. 45. We_______________________(play) soccer in the yard now. 46. My father (go)___________ to work by bike. Sometimes he(walk)______________. 47. _________You (live)________near a market? _ It (be)____________noisy? 48. Now I (do)_____________the cooking while Hoa (listen)_______________to music. 49. At the moment, Nam and his friends (go)_______________________shopping at the mall. 50. In the autumn, I rarely (go)______________sailing and (go)__________to school. 51. I (write)_____________________________ a letter to my friend now. 52. At 12 a.m every day, I (have)______________lunch and (go)____________to bed. 53. On Monday, I (have)________________________ math and Art. 54. On Friday, I (have)______________________English. 55. At the moment, I (eat)______________an orange, and My sisters (Play)_______ Tennis. 56. _______her bag (be)? - No, they(not be)______________. 57. What time _____________your children (go)____________ to school? 58. He (live)________________in HCM City. 59. What time___________your brother usually (get)___________up? làm ơn giúp mik