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What is the relationship between the slopes of two parallel lines?

 

a) two distinct nonvertical lines are parallel if their slopes are reciprocals; that is, the lines with the queation y = MX + b are parallel if and only if mM = 1 or equivalently m = 1/M.

 

b) Two distinct nonvertical lines are parallel if they have the same​ slope; that​ is, the lines with equations y=mx+b and y=Mx+B are parallel if and only if m=M.

 

c) Two lines with slopes m≠0 and M≠0 are parallel if and only if mM=−1​, or​ equivalently, m=−1/M.

 

I think that the answer is b since they need to have the same slope only. Right?

 Sep 12, 2021
edited by BLANK  Sep 12, 2021
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Yes that is right :)

 Sep 13, 2021

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