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MN is perpendicular to LM .
Slope of LM = -1/2
Slope of MN = 2
since product of slopes of perpendicular lines is -1.
We can also note that slope of MN = (2-1)/(3.5-3) =1/(0.5) =2
OL is parallel to MN
Slope of OL =2
We can also note that slope of OL = (3-2)/((1.5-1) =1/(0.5) =2
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Case Study 2: Quality Analysis
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