document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=772854>Question 772854</A>: <I><SPAN STYLE=\"word-break: break-all;\"> can someone please help me solve this and explain step by step please \r<BR>\n" );
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document.write( "The centerline of a new road that we are laying out passes thru grid points (602, 925) and (812, 745). To prepare for the surveyors, we are working out a linear equation for the centerline.<BR>\n" );
document.write( "a) What is the slope of our line?<BR>\n" );
document.write( "b) What is the y-intercept of our line?<BR>\n" );
document.write( "a) slope (reduced fraction): 		<BR>\n" );
document.write( "b) y-intercept (nearest integer): 		 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #471975 by </B><A HREF=/tutors/aboutme.mpl?userid=Cromlix><B>Cromlix(4381)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Cromlix><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=Cromlix><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=471975\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Equation for Slope.<BR>\n" );
document.write( "y2 - y1/x2 - x1<BR>\n" );
document.write( "745 - 925/812 - 602<BR>\n" );
document.write( "-180/210 = -6/7<BR>\n" );
document.write( "Using equation:<BR>\n" );
document.write( "y - b = m(x - a)<BR>\n" );
document.write( "We can use either set of coordinates<BR>\n" );
document.write( "Using (602, 925)<BR>\n" );
document.write( "a = 602, b = 925 and m (slope) = -6/7<BR>\n" );
document.write( "y - b = m(x - a)<BR>\n" );
document.write( "y - 925 = -6/7(x - 602)<BR>\n" );
document.write( "y - 925 = -6/7x + 3612/7<BR>\n" );
document.write( "y = -6/7x + 3612/7 + 6475/7  (925 = 6475/7)<BR>\n" );
document.write( "y = -6/7x + 10087/7<BR>\n" );
document.write( "OR<BR>\n" );
document.write( "multiply thro by 7<BR>\n" );
document.write( "7y = -6x + 10087\r<BR>\n" );
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document.write( "Slope = -6/7<BR>\n" );
document.write( "y intercept (0, 10087/7) = (0, 1441)<BR>\n" );
document.write( "Hope this helps.<BR>\n" );
document.write( ":-) </SPAN>\n" );
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