document.write( "Question 1083029: Find the equation of the line that contains the given point and has the given slope.
\n" ); document.write( "P(4,-7), slope is undefined
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Algebra.Com's Answer #697029 by MathLover1(20849)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( " the equation of the line that contains
\n" ); document.write( "the point and P(\"4\",\"-7\"), slope is undefined\r
\n" ); document.write( "\n" ); document.write( "In general, when the x-values or x-coordinates is the same for both points, the slope is undefined.The x-coordinate never changes no matter what the y-coordinate is! There is no run! \r
\n" ); document.write( "\n" ); document.write( "remember:
\n" ); document.write( "The slope of any \"vertical\" line is \"undefined\".
\n" ); document.write( "The slope of any \"horizontal\" line is \"0\". \r
\n" ); document.write( "\n" ); document.write( "so, in your case line is \"vertical\" and equation is: \"x=a\"\r
\n" ); document.write( "\n" ); document.write( "if line passes the point and P(\"4\",\"-7\"), equation will be \"x=4\"\r
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