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Mathematics 8 Online
OpenStudy (henryblah):

How would you define parametrically the group of all lines that go through the origin? (2 dimensions) I tried (a,na) but this does not include the y-axis case. Is it [(at,bt) : a,b in reals]?

OpenStudy (dumbcow):

yes i think you got it

OpenStudy (henryblah):

I'm just having trouble visualising it because I derived that from the parametric equations themselves.

OpenStudy (henryblah):

Oh I think I see.

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