document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=125392>Question 125392</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the slope of the line passing through the points:\r<BR>\n" );
document.write( "\n" );
document.write( "(4, 7) and (4, 5).\r<BR>\n" );
document.write( "\n" );
document.write( "thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #91888 by </B><A HREF=/tutors/aboutme.mpl?userid=iluvbuilding429><B>iluvbuilding429(41)</B></A><img src=\"/images/stars/stars-07.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=iluvbuilding429><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=91888\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the slope of the line passing through the points:\r<BR>\n" );
document.write( "\n" );
document.write( "(4, 7) and (4, 5).<br><br>\r<BR>\n" );
document.write( "\n" );
document.write( "The formula for this is:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=s=%28y2-y1%29%2F%28x2-x1%29 ALIGN=MIDDLE  ALT=\"s=%28y2-y1%29%2F%28x2-x1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><br>\r<BR>\n" );
document.write( "\n" );
document.write( "So, plug in your values to get:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=s=%285-7%29%2F%284-4%29 ALIGN=MIDDLE  ALT=\"s=%285-7%29%2F%284-4%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><br>\r<BR>\n" );
document.write( "\n" );
document.write( "Subtract:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=s=-2%2F0 ALIGN=MIDDLE  ALT=\"s=-2%2F0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><br>\r<BR>\n" );
document.write( "\n" );
document.write( "But wait! You can't divide by zero! When you run into a problem like this where the denominator turns out to be zero, the slope is indefinite, because the line goes straight up. So, the answer is indefinite.<br><br>\r<BR>\n" );
document.write( "\n" );
document.write( "-buildings </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );