document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=696845>Question 696845</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What is the x coordinate of the point at which the line intersects the x axis on a graph with a line going through pint (7,2) and point (8,-1) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #429377 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=429377\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> What is the x coordinate of the point at which the line intersects the x axis on a graph with a line going through point (7,2) and point (8,-1)<BR>\n" );
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document.write( "slope = (2--1)/(7-8) = -3<BR>\n" );
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document.write( "Form: y = mx + b<BR>\n" );
document.write( "You have m = -3 and y = -1 when x = 8 ; solve for \"b\":<BR>\n" );
document.write( "-1 = -3*8 + b<BR>\n" );
document.write( "b = 22<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "f(x) = -3x + 22<BR>\n" );
document.write( "Ans: <BR>\n" );
document.write( "Solve -3x+22 = 0<BR>\n" );
document.write( "-3x = -22<BR>\n" );
document.write( "x = 22/3<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );