document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=391559>Question 391559</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Are y=2x+9 and 2x+4y=10 parallel, perpendicular,or neither? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #277793 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=277793\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Are y=2x+9 and 2x+4y=10 parallel, perpendicular,or neither?<BR>\n" );
document.write( "y=2x+9 ......................1<BR>\n" );
document.write( "2x+4y=10 <BR>\n" );
document.write( "4y= -2x+10<BR>\n" );
document.write( "/4<BR>\n" );
document.write( "y = -2/4 x +5<BR>\n" );
document.write( "y = (-1/2)x +5................2<BR>\n" );
document.write( "..<BR>\n" );
document.write( "The slope of first equation is 2<BR>\n" );
document.write( "the slope of second equation is (-1/2)<BR>\n" );
document.write( "..<BR>\n" );
document.write( "m1 * m2 = 2 * (-1/2) = -1<BR>\n" );
document.write( "so the lines are perpendicular.<BR>\n" );
document.write( "..<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );