document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=101133>Question 101133</A>: <I><SPAN STYLE=\"word-break: break-all;\"> when trying to find a function you put in 2,5,4,3,and get out 4,13,10,7.<BR>\n" );
document.write( "What is the function is it that I am trying to find? and what is the answer in the form of x>>something. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #73616 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=73616\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> when trying to find a function you put in 2,5,4,3,and get out 4,13,10,7.<BR>\n" );
document.write( "What is the function is it that I am trying to find? and what is the answer in the form of x>>something.<BR>\n" );
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document.write( "That can be rearranged as follows:<BR>\n" );
document.write( "x:... 2,3,.4,.5<BR>\n" );
document.write( "f(x): 4,7,10,13<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "Since there is a constant difference in the f(x) line you know<BR>\n" );
document.write( "the eqution you are looking for is linear, i.e. y = mx+b<BR>\n" );
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document.write( "So substitute two of the x,f(x) points into that linear form to get:<BR>\n" );
document.write( "4 = 2m + b<BR>\n" );
document.write( "13= 5m + b<BR>\n" );
document.write( "--------------<BR>\n" );
document.write( "Subtract the 1st from the 2nd to get:<BR>\n" );
document.write( "9 = 3m<BR>\n" );
document.write( "m = 3<BR>\n" );
document.write( "----------<BR>\n" );
document.write( "Substitute that into 4 = 2m + b to solve for \"b\":<BR>\n" );
document.write( "4 = 2*3 + b<BR>\n" );
document.write( "b = -2<BR>\n" );
document.write( "-------------<BR>\n" );
document.write( "So the equation you want is y = 3x -2<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
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