ANSWERS
y = | x - 3|
y = | x + 3|
y = | x| - 3
y = | x| + 3
收錄日期: 2021-05-01 01:00:51
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20200607061523AAzZdZY