Last edited by jisaac; Jun 24th 2008 at 03:11 AM.
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Originally Posted by colby2152 You must be a member to view such images. All I/we see is blank. soz -just updated the link!
The tip is to substitute, for example in the first question, by x.
If , where k is a constant, then it's a line.
For the fourth one, substitute and see if , where k' is also a constant.
ok thanks got the answer
Last edited by jisaac; Jun 23rd 2008 at 02:02 PM.
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