document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=47773>Question 47773</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a varible y varies directly with the square of x.  if x=2 when y-4, find the constant of proportionality, k.<BR>\n" );
document.write( "how do you find that out?  I am confused.  please help.  thanks so much!   </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #31565 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=31565\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a varible y varies directly with the square of x.  if x=2 when y=4, find the constant of proportionality, k.\r<BR>\n" );
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document.write( "Based on the 1st sentence y=kx^2<BR>\n" );
document.write( "You need to find \"k\".<BR>\n" );
document.write( "Based on the 2nd sentence 4=k(2^2)<BR>\n" );
document.write( "k=4/4=1<BR>\n" );
document.write( "Comment: I noticed you might have meant to type y=-4<BR>\n" );
document.write( "If so, you would have -4=k(2^2). <BR>\n" );
document.write( "Then k would equal -1\r<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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