SOLUTION: how would you find the angle formed by the line y= -2x?

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Question 968872: how would you find the angle formed by the line y= -2x?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
how would you find the angle formed by the line y= -2x?
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You need 2 lines to form an angle.