Equation of Perpendicular Line at Origin

Przybysz
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Got a question "Find an equation of the straight line which passes through the origin and is perpendicular to the line y = 1/2x + 3.

Is the origin (0,0)?

I feel stupid!

Thanks in advance.
 
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1.Yes
2.You shouldn't
3. Welcome to PF!
 
Thanks a lot, sorted that now!
 

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