document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=428609>Question 428609</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Y varies directly as the square of R<BR>\n" );
document.write( "If Y=162 and R=9 <BR>\n" );
document.write( "then find answer for Y, when R=7 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #297876 by </B><A HREF=/tutors/aboutme.mpl?userid=htmentor><B>htmentor(1343)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=htmentor><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=htmentor><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=297876\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> We can write <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=Y+=+kR%5E2 ALIGN=MIDDLE  ALT=\"Y+=+kR%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >, where k is a constant<BR>\n" );
document.write( "Y = 162, R = 9<BR>\n" );
document.write( "Solve for k:<BR>\n" );
document.write( "162 = k*81 -> k = 2<BR>\n" );
document.write( "Therefore, when R = 7:<BR>\n" );
document.write( "Y = 2*7^2 = 98<BR>\n" );
document.write( "Ans: Y = 98<BR>\n" );
document.write( " </SPAN>\n" );
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