document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=998609>Question 998609</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Not sure if this is the right topic but here is the problem:\r<BR>\n" );
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document.write( "Find the equation of the line containing the point p(-1,3) and perpendicular to the graph of 2x+4y=-1. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #616375 by </B><A HREF=/tutors/aboutme.mpl?userid=addingup><B>addingup(3677)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=addingup><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=addingup><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=616375\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> We use the formula for the standard slope-intercept: y= mx+b, where m is the slope and b the y-intercept (the point at which the slope line touches the vertical y line. Y is always the vertical, x is always the horizontal):<BR>\n" );
document.write( "Line perpendicular to the graph of:<BR>\n" );
document.write( "2x + 4y = -1<BR>\n" );
document.write( "Divide both sides by 2x+4:<BR>\n" );
document.write( "y = -(1/2)x - 1/4 - Green line on graph<BR>\n" );
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document.write( "The slope of the line is m= 2 (negative reciprocal of -1/2. If you don't remember how to do this: To find the negative reciprocal, flip the number and then if it's positive make it negative -- and if it's negative make it positive)<BR>\n" );
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document.write( "Now let's use the ordered pair (-1,3) to solve for b:<BR>\n" );
document.write( "y = 2x+ b<BR>\n" );
document.write( "3 = -2 + b<BR>\n" );
document.write( "5 = b<BR>\n" );
document.write( "y = 2x + 5 - Blue line on graph<BR>\n" );
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