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Robyn Carter

on 17 December 2012

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Transcript of hayley

By Hayley and Robyn Greg There are 3 ways to
calculate the slope
of a line Lynn 1: Use the graph and use rise over run The lines that intersect 2: Find two points and use delta y over delta x 3: Use the equation y=mx+b and m is the slope (0,0) Rise over Run
Rising: 2
Running: 1
m=2 (6,6) 6-0 6
---- = -
6-0 6
m= 1 There are two ways to find the point of intersection point of intersection You can find the point of intersection
by doing rise over run
or you can find it algebraically Rise over run

Rising 2 running 2

point of intersection
is (2,2) Equation of a line To find the equation of the line when you have the slope and a point you sub in the x and y value and find b (y int) Equation: Y = mx + b
y = 1x + b
6 = 1(6) + b
6-6= 6 + b - 6
0=b Therefore the equation of Greg is
y= 1x Greg Lynn Equation: y = mx + b
y = -2/1x + b
4 = -2/1( 1/1) + b
5-2= -2 + b + 2
6 = b Therefore the equation of Lynn is
y= -2x + 6 Point of intersection
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