document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=180591>Question 180591</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi. \r<BR>\n" );
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document.write( "I need some help checking this problem.\r<BR>\n" );
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document.write( "Find the  through of<BR>\n" );
document.write( "a. the vertical line through (-1,7)<BR>\n" );
document.write( "b. the line containing (-2,6) and (4,0)\r<BR>\n" );
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document.write( "thanks<BR>\n" );
document.write( "H.C.<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 #135346 by </B><A HREF=/tutors/aboutme.mpl?userid=Mathtut><B>Mathtut(3670)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Mathtut><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=135346\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I need some help checking this problem. <BR>\n" );
document.write( "Find the through of<BR>\n" );
document.write( "a. the vertical line through (-1,7)<BR>\n" );
document.write( "b. the line containing (-2,6) and (4,0)<BR>\n" );
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document.write( "a) remember vertical lines take the form of x=a and x is a for all values of y<BR>\n" );
document.write( "so we know the x value of the point (-1,7) is -1 and remember it is -1 for ALL values of y<BR>\n" );
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document.write( "our equation is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28x=-1%29 ALIGN=MIDDLE  ALT=\"highlight%28x=-1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "b)(-2,6) and (4,0)<BR>\n" );
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document.write( "first thing we have to do is find the slope:<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=DELTA%28y%29%2FDELTA%28x%29 ALIGN=MIDDLE  ALT=\"DELTA%28y%29%2FDELTA%28x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "(0-6)/(4-(-2))=6/6=1<BR>\n" );
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document.write( "so our slope is m=1. now we have to use the point slope formula to find our equation: y-k=m(x-h).....where m is the slope and (h,) is ANY point on the line<BR>\n" );
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document.write( "so lets choose ONE of our points I will use (4,0)<BR>\n" );
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document.write( "y-0=1(x-4)<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28y=x-4%29 ALIGN=MIDDLE  ALT=\"highlight%28y=x-4%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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