3.6 ll lines in coord plane

3.6 ll lines in coord plane - Slope Ex: write an eqn of the...

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3.6 Parallel Lines in the Coordinate Plane p. 165
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What is Slope? Ex: Find the slope of a line that passes through the pts (0,-3) and (-2,4). Run Rise s in x value change y values in change 1 2 1 2 x x y y m - - = 2 0 4 3 - - - - = m 2 7 - =
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Slope cont. Up 7 Left 2 2 7 - or 2 7 -
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Postulate 17: Slope of Parallel lines In a coordinate plane, 2 non- vertical lines are  iff they have the same slope. Any 2 vertical lines are parallel.
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Slope Intercept form y=mx+b y intercept
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Unformatted text preview: Slope Ex: write an eqn of the line with a slope of -1/3 and a y-int of 2. y=-1/3x+2 Slope formula cont. Ex: Line l has the eqn y= -1/3x-1 line m is ll to line l and passes thru (3,2). Write the eqn for line m . Use y=mx+b Slope of Line l : -1/3 2200 Slope of line m :-1/3 Use (3,2) for (x,y) 2=(-1/3)3+b 2=-1+b 3=b y=-1/3x+3 Assignment Assignment...
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3.6 ll lines in coord plane - Slope Ex: write an eqn of the...

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