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OpenStudy (anonymous):
Two lines are perpendicular, and neither line is horizontal. Which of the following is not necessarily true of the lines? A. The slopes of the two lines are opposite reciprocals. B. One line must have a positive slope. C. The y-intercepts are the same. D. One line must have a negative slope.
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OpenStudy (lncognlto):
C
OpenStudy (anonymous):
thank you
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