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3-3 Slopes of Lines

# 3-3 Slopes of Lines - perpendicular iff the product of...

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Slopes of Lines Section 3-3

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Definition of Slope The slope m of a line containing 2 points with coordinate (x 1 , y 1 ) and (x 2 , y 2 ) is given by the formula: 2 1 1 2 1 2 , x x where x x y y m - - = run horizontal rise vertical slope =
Postulate 3-2 and 3-3 2 nonvertical lines have the same slope iff they are parallel. 2 nonvertical lines are

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Unformatted text preview: perpendicular iff the product of their slopes is –1. undefined slope zero slope positive slope negative slope Joke Time What do you call a hippo in a phone booth? stuck What would America be called if we all drove pink cars? A pink carnation...
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3-3 Slopes of Lines - perpendicular iff the product of...

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