document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=313708>Question 313708</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If I have the ordered pairs of (2,54) &(54,2) How would I figure out where they would intersect. I know there is an equation for it but I can't remember hwo to get it started. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #224309 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=224309\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If I have the ordered pairs of (2,54) &(54,2) How would I figure out where they would intersect. I know there is an equation for it but I can't remember hwo to get it started.<BR>\n" );
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document.write( "First find the slope of the line thru the points.<BR>\n" );
document.write( "slope m = diffy/diffx = -52/52 = -1<BR>\n" );
document.write( "Then use either point and y = mx + b to find the y-intercept, b.<BR>\n" );
document.write( "54 = -1*2 + b<BR>\n" );
document.write( "b = 56<BR>\n" );
document.write( "--> y = -x + 56<BR>\n" );
document.write( "x+y = 56<BR>\n" );
document.write( " </SPAN>\n" );
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