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Find the slope of the line that is ​(a) parallel and ​(b) perpendicular to the line through the pair of points. ​(−5​,−4​) and ​(3​,5​)
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Find the slope of the line that is ​(a) parallel and ​(b) perpendicular to the line through the pair of points. ​(−5​,−4​) and ​(3​,5​)

User Mourad M
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Slope of a line parallel is equal to change in y over change in x: which is 9/8, or 1.125. A line perpendicular is the negative reciprocal, which is -8/9.
User Dusean Singh
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