Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter9: Systems Of Linear Equations
Section9.4: The Addition-or-subtraction Method
Problem 30WE
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Sketch the graph          

         2x+4 if x<1

f(x)= -x+7 if 1<x<4

         1/2x-2 if x>4

And could i get an explanation of every step? (like how to find where the dots should be and so on)  :) :) :) 

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