document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=27182>Question 27182</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 21.	Write the equation of the line passing through (2, –2) and (–4, –2). </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #14773 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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/cgi-bin/show-face.mpl?user=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=14773\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use the formulas<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28y%5B2%5D+-+y%5B1%5D%29+%2F+%28x%5B2%5D+-+x%5B1%5D%29+=+slope ALIGN=MIDDLE  ALT=\"%28y%5B2%5D+-+y%5B1%5D%29+%2F+%28x%5B2%5D+-+x%5B1%5D%29+=+slope\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28y+-+y%5B1%5D%29+%2F+%28x+-+x%5B1%5D%29+=+slope ALIGN=MIDDLE  ALT=\"%28y+-+y%5B1%5D%29+%2F+%28x+-+x%5B1%5D%29+=+slope\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "first<BR>\n" );
document.write( "-2 - (-2) / -4 - 2 = 0<BR>\n" );
document.write( "then<BR>\n" );
document.write( "y - (-2) / x - 2 = 0  (I now know the slope is zero)<BR>\n" );
document.write( "y + 2 / x - 2 = 0<BR>\n" );
document.write( "y + 2 = 0<BR>\n" );
document.write( "y = -2<BR>\n" );
document.write( "That makes sense, because y didn't change (2, -2) (-4, -2)<BR>\n" );
document.write( "so, (any x, -2) solves the equation. </SPAN>\n" );
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