user-avatar
Trantoto
2 năm trước
Bài 15:Cho 3 đường thẳng $(d_{1}) : y=2x-1$; $(d_{2}) : y=2-x$ , $(d_{3}) : y=ax+1$.Xác định a để 3 đường thẳng trên đồng quy, rồi vẽ đồ thị 3 đường thẳng trên cùng một hệ trục tọa độ. giúp với
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

A few weeks ago, I had a (1) _______ unusual flight from London to Khartoum. The flight was (2) _______ to leave at a quarter past two, so I checked in at half past twelve, thinking that I had plenty of time to save. I was rather horrified to find that I had to pay £50 (3) _______ baggage, but on the other hand, it was relief to see the back of my suitcase, which was, I had to (4) _______ , extremely heavy. Having visited the duty-free shop, I sat in the lounge waiting for my I flight to be called. Two o'clock came, and (5) _______ there was no announcement, so I went over to the information desk. The ground hostess (6) _______ me that the plane would be leaving only a few minutes later than scheduled, and I sat down again. Suddenly there was an announcement: 'Flight (7) _______ until 17.45'. There was a collective groan from the waiting passengers, but the airline then announced that it was offering us a free lunch, which (8) _______ us all a little. We eventually took off at 17.45. Shortly after we were airborne, the captain explained the (9) _______ of our delay. Apparently, just before we were original due to board, a mouse had been discovered on the plane. As a result, the plane had had to be (10) _______ from service. 1.A. somehow B. somewhat C. somewhere D. something 2.A. destined B. planned C. likely D. due 3.A. hand B. heavy C. excess D. loaded 4.A. admit B. expect C. confess D. confide 5.A. so B. only C. just D. still 6.A. warned B. assured C. insured D. assumed 7.A. diverted B. canceled C. delayed D. confirmed 8.A. pacified B. persuaded C. encouraged D. consoled 9.A. reason B. cause C. origin D. root 10. A. withdrawn B. deleted C. removed D. pulled

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team