document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=29485>Question 29485</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I am having problems with these equations by subtitution.\r<BR>\n" );
document.write( "\n" );
document.write( "8y=15-4x<BR>\n" );
document.write( "x+2y=4\r<BR>\n" );
document.write( "\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 #16285 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=16285\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I don't think there is a solution<BR>\n" );
document.write( "8y=15-4x<BR>\n" );
document.write( "x+2y=4<BR>\n" );
document.write( "multiply 2nd by 4<BR>\n" );
document.write( "4x + 8y = 16<BR>\n" );
document.write( "rearrange the 1st<BR>\n" );
document.write( "4x + 8y = 15<BR>\n" );
document.write( "if you 4x + 8y in the 2nd into the 1`st, you get 15 = 16<BR>\n" );
document.write( "that's because the plots of the equations are parallel lines<BR>\n" );
document.write( "and theres no common solution<BR>\n" );
document.write( "in the form y = mx + b,<BR>\n" );
document.write( "y = -1/2 x + 2<BR>\n" );
document.write( "and<BR>\n" );
document.write( "y = -1/2 x + 15/8<BR>\n" );
document.write( "so, they're 1/8 apart and both have -1/2 slope </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );