document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1078679>Question 1078679</A>: <I><SPAN STYLE=\"word-break: break-all;\"> y is directly proportional to x^2 and y=a for a particular value of x. Find an expression for y in terms of a, when this value of x is doubled.<BR>\n" );
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document.write( "Please help me with this!! Thank you. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #693081 by </B><A HREF=/tutors/aboutme.mpl?userid=akch2002><B>akch2002(12)</B></A><img src=\"/images/stars/stars-06.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=akch2002><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=akch2002><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=693081\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  y is directly proportional to x^2 and y=a for a particular value of x. Find an expression for y in terms of a, when this value of x is doubled.<BR>\n" );
document.write( " we can write <BR>\n" );
document.write( "y =kx^2   where k is proportionality constant.<BR>\n" );
document.write( "further<BR>\n" );
document.write( "a = kx^2            ---- (1)\r<BR>\n" );
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document.write( "We have to find when x is doubled.<BR>\n" );
document.write( "Let it be y1.<BR>\n" );
document.write( "Hence, y1= k(2x)^2 = k*4x^2         ---- (2)<BR>\n" );
document.write( "Putting value of k from 1, we get<BR>\n" );
document.write( "y1 = (a/x^2)*4x^2 <BR>\n" );
document.write( "   = 4a will be the value of when at double value.  </SPAN>\n" );
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