document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=238600>Question 238600</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Use slopes to show that the square with virtices at (-2,5), (4, 5), (4, -1), and (-2, -1) has diagonals that are perpendicular.\r<BR>\n" );
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document.write( "I have looked over my chapter this week and I really need a refresher course quickly because it has been over 30 years since I have taken a math clas of this nature. This is only my first week and I have become really frustrated and lord knows, I have got to pass this class to get my degree in MR. I just need to learn how to function with all these x's and y's.\r<BR>\n" );
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document.write( "Thank you for your help, I really appreciated it. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #175319 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=175319\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use slopes to show that the square with virtices at (-2,5), (4, 5), (4, -1), and (-2, -1) has diagonals that are perpendicular. <BR>\n" );
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document.write( "Plot the points on a coordinate system so you can see where the<BR>\n" );
document.write( "end points of the diagonals are.<BR>\n" );
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document.write( "1st pair is (-2,5),(4,-1)<BR>\n" );
document.write( "slope of that segment is (-1-5)/(4--2) = -6/6 = -1<BR>\n" );
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document.write( "2nd pair at (4,5),(-2,-1)<BR>\n" );
document.write( "slope of that segment is (-1-5)(-2-4) = -6/-6 = 1<BR>\n" );
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document.write( "Since the product of the slopes is -1, the diagonals are perpendicular<BR>\n" );
document.write( "to one another.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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