document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=163816>Question 163816</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I am asking for help with this. I am having trouble with it.\r<BR>\n" );
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document.write( "3.	The points (3, 9), (5, 13), (15, 33), (34, 71), (678, 1359), and (1234, 2471) all lie on line M.<BR>\n" );
document.write( "The points (3, -9), (5, -11), (15, -21), (34, -40), (678, -684), and (1234, -1240) all lie on line N.<BR>\n" );
document.write( "a.	Form the equations of both the lines.  Show your work.  <BR>\n" );
document.write( "b.	What are the co-ordinates of the point of intersection of lines M and N?<BR>\n" );
document.write( "c.	Write the co-ordinates of the intersections of lines M and N with the x-axis.<BR>\n" );
document.write( "d.	Write the co-ordinates of the intersection of lines M and N with the y-axis. <BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #120689 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=120689\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a. M __ slope is (13-9)/(5-3) __ 4/2 __ 2<BR>\n" );
document.write( "__ using point-slope __ y-9=2(x-3) __ y-9=2x-6 __ y=2x+3\r<BR>\n" );
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document.write( "N __ slope is (-11-(-9))/(5-3) __ -2/2 __ -1<BR>\n" );
document.write( "__ using point-slope __ y-(-9)=-1(x-3) __ y+9=-x+3 __ y=-x-6\r<BR>\n" );
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document.write( "b. at the point of intersection, the x's and y's of both equations are the same<BR>\n" );
document.write( "__ 2x+3=-x-6 __ 3x=-9 __ x=-3<BR>\n" );
document.write( "__ substituting to find y __ y=2(-3)+3 __ y=-3<BR>\n" );
document.write( "__ intersection is (-3,-3)\r<BR>\n" );
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document.write( "c. at x-intercept, y=0<BR>\n" );
document.write( "__ M __ 0=2x+3 __ -3=2x __ -3/2=x __ x-intercept is (-3/2,0)<BR>\n" );
document.write( "__ N __ 0=-x-6 __ 6=-x __ -6=x __ x-intercept is (-6,0)\r<BR>\n" );
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document.write( "d. at y-intercept, x=0<BR>\n" );
document.write( "__ M __ y=2(0)+3 __ y=+3 __ y-intercept is (0,3)<BR>\n" );
document.write( "__ N __ y=-(0)-6 __ y=-6 __ y-intercept is (0,-6) </SPAN>\n" );
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