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

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asked Apr 17, 2023 159k views

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

Mathematics
high-school

TAGraves asked

by TAGraves

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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.

Pelos answered Apr 19, 2023

by Pelos

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in order for linear functions to be parallel, the slope needs to be the same, so the slope of CD has to be -3

Amos answered Apr 20, 2023

by Amos

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