Explain, please?
回答 (1)
2020-06-13 1:56 am
Draw the lines x = 1, y = x and y + 3x = 7
Ensure they are dashed as our solution points do not lie on the lines.
Testing with point (-1, 15) we get:
-1 < 1, 15 > -1 and 15 - 3 > 7....all true!!
:)>
Ensure they are dashed as our solution points do not lie on the lines.
Testing with point (-1, 15) we get:
-1 < 1, 15 > -1 and 15 - 3 > 7....all true!!
:)>
收錄日期: 2021-04-24 07:54:17
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https://hk.answers.yahoo.com/question/index?qid=20200612171120AAkVKGS