document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=87127>Question 87127</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What are the slope and y-intercepts of x=-9? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #63085 by </B><A HREF=/tutors/aboutme.mpl?userid=Nate><B>Nate(3500)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Nate><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=63085\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x = -9 ... <BR>\n" );
document.write( "Simplify the meaning by picking multiple coordinates.<BR>\n" );
document.write( "( x , -2 ), ( x , -1 ), ( x , 0 ), ( x , 1 ), ( x , 2 )<BR>\n" );
document.write( "There is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y ALIGN=MIDDLE  ALT=\"y\"   DISABLED_style= \"max-width:90%; height:auto;\" > to plug in these values: x = 0y - 9<BR>\n" );
document.write( "( -9 , -2 ), ( -9 , -1 ), ( -9 , 0 ), ( -9 , 1 ), ( -9 , 2 )<BR>\n" );
document.write( "This is a vertical line, so the line doesn't intersect with the y-axis ... no y-intercepts.<BR>\n" );
document.write( "slope = (y2 - y1) / (x2 - x1) = (2 - 1) / (-9 + 9) = 1 / 0<BR>\n" );
document.write( "The slope is undefined. </SPAN>\n" );
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