document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=73149>Question 73149</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If y varies directly as x^2, and if y=36 when x=2, find y when x=10. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #52409 by </B><A HREF=/tutors/aboutme.mpl?userid=psbhowmick><B>psbhowmick(878)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=psbhowmick><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=psbhowmick><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=52409\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If y varies directly as <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2 ALIGN=MIDDLE  ALT=\"x%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >, then <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+kx%5E2 ALIGN=MIDDLE  ALT=\"y+=+kx%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >______(1) where k = constant of variation.\r<BR>\n" );
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document.write( "When y = 36 then x=2.<BR>\n" );
document.write( "So substitute these values for x & y in in equation (1)<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=36+=+k%2A2%5E2 ALIGN=MIDDLE  ALT=\"36+=+k%2A2%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=36+=+k%2A4 ALIGN=MIDDLE  ALT=\"36+=+k%2A4\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=k=36%2F4=9 ALIGN=MIDDLE  ALT=\"k=36%2F4=9\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "So, equation (1) becomes <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+9x%5E2 ALIGN=MIDDLE  ALT=\"y+=+9x%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Hence when x = 10, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+9x%5E2+=+9%2A10%5E2+=+900 ALIGN=MIDDLE  ALT=\"y+=+9x%5E2+=+9%2A10%5E2+=+900\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "So, when x = 10, y = 900. </SPAN>\n" );
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