document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=235857>Question 235857</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Resolution<BR>\n" );
document.write( "(*) y= 2x-1<BR>\n" );
document.write( "Attribute at least two values of x an get y values in oder to get two or more points to draw grah.<BR>\n" );
document.write( "example:<BR>\n" );
document.write( "for x=0; y=2*0-1 then y=-1 and we get the first point A(0,-1)<BR>\n" );
document.write( "for x=1; y=2*1-1 then y=1 and we get the second point B(1,1)<BR>\n" );
document.write( "We must materialize A and B then join A and B. that's all.<BR>\n" );
document.write( "for the second equation y= -3x +9 do the same thing: attribuate any values of x(at least two values) in oder to get y. <BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #173621 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=173621\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> y = 2x – 1 (red line)<BR>\n" );
document.write( "y = -3x + 9  (green line)<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+10%2C+2x+-1%2C+-3x+%2B9%29+ ALIGN=MIDDLE  ALT=\"+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+10%2C+2x+-1%2C+-3x+%2B9%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions 2x -1 and -3x +9). <BR>\n" );
document.write( "y = 2x – 1<BR>\n" );
document.write( "y = -3x + 9 subtract these 2 equations.<BR>\n" );
document.write( "---------------------<BR>\n" );
document.write( "0=5x-10<BR>\n" );
document.write( "5x=10<BR>\n" );
document.write( "x=10/5<BR>\n" );
document.write( "x=2 ans.<BR>\n" );
document.write( "y=2*2-1<BR>\n" );
document.write( "y=4-1<BR>\n" );
document.write( "y=3 ans.<BR>\n" );
document.write( "Intersect=(2,3) </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );