Find the rule to this equation

label Algebra
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Aug 18th, 2014

When x=-2 y=-1

x=0 y=3

Slope = (3-(-1))/(0-(-2))=4/2=2

y=2x+c is the equation of the line

it passes through (0,3)

3=2*0+c

c=3

Hence the equation of the line is y=2x+3


Aug 18th, 2014

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