document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=528567>Question 528567</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need some help with this please. <BR>\n" );
document.write( "write a formula that expresses the relationship P varies jointly as x and y and P=8 when x=3 and y=-10 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #349347 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=349347\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> write a formula that expresses the relationship P varies jointly as x and y <BR>\n" );
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document.write( "Let k = the the constant of variation<BR>\n" );
document.write( "P = xyk<BR>\n" );
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document.write( "and P=8 when x=3 and y=-10<BR>\n" );
document.write( "8 = 3*-10*k<BR>\n" );
document.write( "find k<BR>\n" );
document.write( "8 = -30k<BR>\n" );
document.write( "k = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8%2F%28-30%29 ALIGN=MIDDLE  ALT=\"8%2F%28-30%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "k = -.267<BR>\n" );
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document.write( "P = -.267xy is the formula </SPAN>\n" );
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