document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=913972>Question 913972</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me solve this problem:<BR>\n" );
document.write( "Find a real number, k, such that the line 8x+ky&#8722;15=0 has y-intercept 9. k=_____ </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #554814 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20850)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=554814\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \r<BR>\n" );
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document.write( "Find a real number, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=k ALIGN=MIDDLE  ALT=\"k\"   DISABLED_style= \"max-width:90%; height:auto;\" >, such that the line <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8x%2Bky-15=0 ALIGN=MIDDLE  ALT=\"8x%2Bky-15=0\"   DISABLED_style= \"max-width:90%; height:auto;\" > has y-intercept <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9 ALIGN=MIDDLE  ALT=\"9\"   DISABLED_style= \"max-width:90%; height:auto;\" >. k=_____\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8x%2Bky-15=0 ALIGN=MIDDLE  ALT=\"8x%2Bky-15=0\"   DISABLED_style= \"max-width:90%; height:auto;\" > first write it in slope-intercept form\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ky=-8x%2B15 ALIGN=MIDDLE  ALT=\"ky=-8x%2B15\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=-%288%2Fk%29x%2B15%2Fk ALIGN=MIDDLE  ALT=\"y=-%288%2Fk%29x%2B15%2Fk\"   DISABLED_style= \"max-width:90%; height:auto;\" > ...slope <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m=-%288%2Fk%29 ALIGN=MIDDLE  ALT=\"m=-%288%2Fk%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > and y-intercept <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b=15%2Fk ALIGN=MIDDLE  ALT=\"b=15%2Fk\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "if the line <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8x%2Bky-15=0 ALIGN=MIDDLE  ALT=\"8x%2Bky-15=0\"   DISABLED_style= \"max-width:90%; height:auto;\" > has y-intercept <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9 ALIGN=MIDDLE  ALT=\"9\"   DISABLED_style= \"max-width:90%; height:auto;\" >, than we know that y-intercept is at (<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+0+ ALIGN=MIDDLE  ALT=\"+0+\"   DISABLED_style= \"max-width:90%; height:auto;\" >,<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9 ALIGN=MIDDLE  ALT=\"9\"   DISABLED_style= \"max-width:90%; height:auto;\" >)\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=15%2Fk=9 ALIGN=MIDDLE  ALT=\"15%2Fk=9\"   DISABLED_style= \"max-width:90%; height:auto;\" > => <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28k=15%2F9%29 ALIGN=MIDDLE  ALT=\"highlight%28k=15%2F9%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "so, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8x%2Bky-15=0 ALIGN=MIDDLE  ALT=\"8x%2Bky-15=0\"   DISABLED_style= \"max-width:90%; height:auto;\" > will be <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8x%2B%2815%2F9%29y-15=0 ALIGN=MIDDLE  ALT=\"8x%2B%2815%2F9%29y-15=0\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "in slope-intercept form\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=-%288%2F%2815%2F9%29%29x%2B15%2F%2815%2F9%29 ALIGN=MIDDLE  ALT=\"y=-%288%2F%2815%2F9%29%29x%2B15%2F%2815%2F9%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=-%288%2A9%2F15%29x%2B%2815%2A9%29%2F%2815%2F9%29 ALIGN=MIDDLE  ALT=\"y=-%288%2A9%2F15%29x%2B%2815%2A9%29%2F%2815%2F9%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=-%288%2Across%289%293%2Fcross%2815%295%29x%2B%28cross%2815%29%2A9%29%2Fcross%2815%29 ALIGN=MIDDLE  ALT=\"y=-%288%2Across%289%293%2Fcross%2815%295%29x%2B%28cross%2815%29%2A9%29%2Fcross%2815%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=-%2824%2F5%29x%2B9 ALIGN=MIDDLE  ALT=\"y=-%2824%2F5%29x%2B9\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( " </SPAN>\n" );
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