document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=91690>Question 91690</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Determine which two equations represent perpendicular lines.\r<BR>\n" );
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document.write( "a)  y  =  1/9  x  + 3<BR>\n" );
document.write( "b)  y  = 9  x  -  3<BR>\n" );
document.write( "c)  y  =  1/9  x  -  3<BR>\n" );
document.write( "d)   y  =  - 1/9 x  -  3<BR>\n" );
document.write( "these are fractions and the x is centered, next to the plus sign there are no parenthese in my question. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #66605 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=66605\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> all these equations are in the slope-intercept form (y=mx+b), where m is the slope of the line and b is the y-intercept\r<BR>\n" );
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document.write( "two lines are perpendicular if their slopes are negative reciprocals of each other ... in this case, 9 and -1/9\r<BR>\n" );
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document.write( "so b and d are the equations </SPAN>\n" );
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