document.write( "Question 154667: Why is the line x=4 a verticle line.
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Algebra.Com's Answer #113916 by checkley77(12844)\"\" \"About 
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X=4 MEANS NO MATTER WHAT Y VALUE IS GIVEN THE CORRESPONDING X VALUE IS 4.
\n" ); document.write( "THE BEST WAY TO VISUALIZE THIS IS THE GRAPH X=4 AS A VERTICLE LINE THROUGH THE POINT (4,0).
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