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Mathematics 14 Online
OpenStudy (anonymous):

If I'm asked to find a perpendicular line to x=7, I can't do that right? The line have to be non vertical right?

OpenStudy (imstuck):

The perpendicular line to x = 7 could be any horizontal line in the world. Here is x = 7 on a graph.|dw:1410557960126:dw|

OpenStudy (imstuck):

Perpendicular means it runs at a 90 degree angle to the line x = 7. So a line perpendicular to that line could be any y = line. Like this, for example:|dw:1410558077588:dw|

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