document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1498>Question 1498</A>: <I><SPAN STYLE=\"word-break: break-all;\"> x= 1, 4, 5, 6, 8<BR>\n" );
document.write( "y=  _, 18, 23,  28, 38\r<BR>\n" );
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document.write( "I have to solve for y.  I do not the equation to solve this problem.  My book calls this problem graphing functions. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #522 by </B><A HREF=/tutors/aboutme.mpl?userid=khwang><B>khwang(438)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=khwang><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=522\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  This question is to find the linear function of y in terms of x.<BR>\n" );
document.write( " Assume (y-y1)/(x-x1) = m , since when x=4, y =18 and when x=5,y=23.<BR>\n" );
document.write( " slope m = (23-18)/(5-4) = 5. <BR>\n" );
document.write( " We have (y-18)/(x-4) = 5, or y-18 = 5(x-4)<BR>\n" );
document.write( " or y = f(x) = 5x -2.<BR>\n" );
document.write( " Check: f(6) = 30-2 =28 = y(OK), <BR>\n" );
document.write( "        f(8) = 40-2 =38 (OK)\r<BR>\n" );
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