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If AB is parallel to CD and the slope of AB is -3, what is the slope of CD?
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If AB is parallel to CD and the slope of AB is -3, what is the slope of CD?

User TAGraves
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13 votes
It should be -3 as well, if there parallel they are equal, parallel lines have equal slopes. Since the slope of AB is -3 and CD is parallel to AB then CD has a slope of -3.
User Pelos
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11 votes
in order for linear functions to be parallel, the slope needs to be the same, so the slope of CD has to be -3
User Amos
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6.5k points
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