Trong mặt phẳng Oxy xét phép biến hình F biến mỗi điểm M (x;y) thành M'(2x-1;-2y+3). Viết phương trình đường thẳng d' là ảnh của đường thẳng d: x-2x+6=0 qua phép biến hình F

Các câu hỏi liên quan

Help Me Pls 2.I was all set to take the job in Tokyo, but at the last minute I ...................... and decided to stay in Britain. A. pulled my finger out B. got cold feet C. held my horses D. called it a day 3.“ What I’ve got to say to you now is strictly ...................... and most certainly not for publication,”. “ said the government official to the reporter.” A. beside the point B. for the time being C. by the way D. off the record 4.I’ve never enjoyed going to the ballet or the opera; they are not really my.................. A. piece of cake B. chip off the old block C. biscuit D. cup of tea 5.“ What is the wrong with Tom today? He’s unusually quiet.” “ He’s got something on his ......... I expect.” A. brain B. mind C. thoughts D. brow 6.He was wearing very shabby, dirty clothes and looked very...................... A. easy-going B. down to earth C. out of shape D. down at heel 7.Since he started his own business he has been making money hand over ................. A. fist B. heel C. head D. palm 8.I can’t see us beating them at tennis this year – we’re so out of....................... A. step B. practice C. fitness D. breath 9.I am not surprised that Tom is ill. He’s been ......................... for a long time. It was bound to affect his health sooner or later. A. having a cake and eating it B. burning the candle at both ends C. playing with fire D. going to town 10. I just couldn’t remember her name even though it was on the .................. of my tongue. A. edge B. tip C. top D. front