document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=91816>Question 91816</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello, \r<BR>\n" );
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document.write( "I need help  with this:\r<BR>\n" );
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document.write( "If y varies directly as x and y = 25 when x = 10, find y when x = 4.\r<BR>\n" );
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document.write( "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 #66661 by </B><A HREF=/tutors/aboutme.mpl?userid=Earlsdon><B>Earlsdon(6294)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Earlsdon><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=66661\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If y varies directly as x, you can write this as:<BR>\n" );
document.write( "y = kx where k is called the constant of proportionality.<BR>\n" );
document.write( "To find the value of k, substitute the given values of y (25) and x (10) and solve for k.<BR>\n" );
document.write( "25 = 10k Divide both sides by 10.<BR>\n" );
document.write( "k = 2.5<BR>\n" );
document.write( "Now you have: y = 2.5x so you can find the value of y when x = 4.<BR>\n" );
document.write( "y = 2.5(4)<BR>\n" );
document.write( "y = 10  </SPAN>\n" );
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