document.write( "Question 312597: How can I explain in 50 words that x=4 is a vertical line? \n" ); document.write( "
Algebra.Com's Answer #223505 by Alan3354(69443)\"\" \"About 
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For all values of y, x is 4. That makes it parallel to the y-axis, or vertical. \n" ); document.write( "
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