document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=999007>Question 999007</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Ax+By=C<BR>\n" );
document.write( "M=7, (3,3)<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #616673 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39620)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=616673\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You must be looking for the values of A, B, and C.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=M=-A%2FB=7%2F1 ALIGN=MIDDLE  ALT=\"M=-A%2FB=7%2F1\"   DISABLED_style= \"max-width:90%; height:auto;\" > and the given point lets you find C.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-7x%2B1%2Ay=-7%2A3%2B3 ALIGN=MIDDLE  ALT=\"-7x%2B1%2Ay=-7%2A3%2B3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-7x%2By=-18 ALIGN=MIDDLE  ALT=\"-7x%2By=-18\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%287x-y=-18%29 ALIGN=MIDDLE  ALT=\"highlight%287x-y=-18%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "A longer but easier way:<BR>\n" );
document.write( "Solve the standard equation for y in terms of x and arrange into slope-intercept form.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=By=-Ax%2BC ALIGN=MIDDLE  ALT=\"By=-Ax%2BC\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=-%28A%2FB%29x%2BC%2FB ALIGN=MIDDLE  ALT=\"y=-%28A%2FB%29x%2BC%2FB\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "In this way, you see <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=M=-A%2FB=7%2F1 ALIGN=MIDDLE  ALT=\"M=-A%2FB=7%2F1\"   DISABLED_style= \"max-width:90%; height:auto;\" > from which you can say  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A=-7 ALIGN=MIDDLE  ALT=\"A=-7\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=B=1 ALIGN=MIDDLE  ALT=\"B=1\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "Now put this back into the standard form, left-hand member.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-7x%2B1%2Ay ALIGN=MIDDLE  ALT=\"-7x%2B1%2Ay\"   DISABLED_style= \"max-width:90%; height:auto;\" >;<BR>\n" );
document.write( "and remember, this was equated to C in that standard form equation.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-7x%2By=C ALIGN=MIDDLE  ALT=\"-7x%2By=C\"   DISABLED_style= \"max-width:90%; height:auto;\" >.<BR>\n" );
document.write( "Having a known, given point on the line, you just substitute those coordinates to evaluate C.<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-7%2A3%2B3=C ALIGN=MIDDLE  ALT=\"-7%2A3%2B3=C\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=C=-18 ALIGN=MIDDLE  ALT=\"C=-18\"   DISABLED_style= \"max-width:90%; height:auto;\" > as found earlier.\r<BR>\n" );
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document.write( "Put everything back into the standard form equation.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28-7x%2By=-18%29 ALIGN=MIDDLE  ALT=\"highlight%28-7x%2By=-18%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >-----This seems to be better, and therefore a mistake must have happened in the earlier shown solution. </SPAN>\n" );
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