請依下圖用英文列出所有步驟及理據
圖:
http://i167.photobucket.com/albums/u159/karycheung-1994/CO6.jpg
英文平行線及垂直線數學題2(15分)
2009-03-26 12:41 am
回答 (1)
2009-03-26 12:49 am
✔ 最佳答案
Since L2 // L1 , so the slope of L2 = L1 = -1/2we have :
a-(-4) / (-10 - 4) = -1/2
a+4 / -14 = -1/2
a+4 = 7
a = 3
收錄日期: 2021-04-21 22:04:18
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090325000051KK00875