document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=694550>Question 694550</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Question 1; Write the equations of two lines who's graphs are perpendicular to one another. <BR>\n" );
document.write( "Question 2; on a map, Sandusky st. Passes through coordinates( 2,-1) and (4,8). Pennsylvania ave. intersects Sandusky st. And passes through coordinates (1,3) and (6,2) are these streets perpendicular explain? <BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #428022 by </B><A HREF=/tutors/aboutme.mpl?userid=ReadingBoosters><B>ReadingBoosters(3246)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ReadingBoosters><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=428022\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Perpendicular lines have negative inverse/reciprocal slopes.<BR>\n" );
document.write( "Take a slope of 2, the negative inverse will be <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-1%2F2 ALIGN=MIDDLE  ALT=\"-1%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "A simple answer for two lines are<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28y+=+2%29 ALIGN=MIDDLE  ALT=\"highlight_green%28y+=+2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28x+=-1%2F2%29 ALIGN=MIDDLE  ALT=\"highlight_green%28x+=-1%2F2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, such that the first equation is a horizontal line through y=2 and the second equation is a vertical line through x = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-1%2F2 ALIGN=MIDDLE  ALT=\"-1%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "...<BR>\n" );
document.write( "Given the points (2,-1) and (4,8), the slope is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28-1-8%29%2F%282-4%29+=+-9%2F-2+=+9%2F2 ALIGN=MIDDLE  ALT=\"%28-1-8%29%2F%282-4%29+=+-9%2F-2+=+9%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "With the points (1, 3) and (6, 2), the slope is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%283-2%29%2F%281-6%29+=+1%2F-5+=+-1%2F5 ALIGN=MIDDLE  ALT=\"%283-2%29%2F%281-6%29+=+1%2F-5+=+-1%2F5\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "No, these streets are not perpendicular, becuase their slopes are not negative inverses.<BR>\n" );
document.write( "……………….<BR>\n" );
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