document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=623677>Question 623677</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Dear All,\r<BR>\n" );
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document.write( "I wish if you could help me understand below, please?\r<BR>\n" );
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document.write( "The problem says: Line X has a slope of 3. The line passes through Point X at (-2,-1) and also passes through Point Z., which has an x-coordinate of 0. What are the coordinates of Point Z?\r<BR>\n" );
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document.write( "So I guess that I have to substitute the given values in the formula m=Y2-y1 / X2-X1 (sorry I could not find the small 2s and 1s in my keyboard). So I got: 3= -1-y/-2-0 then 3= -1-y / -2 and after that I am stuck. I do not know how to find the Y value.\r<BR>\n" );
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document.write( "Many thanks for your help.<BR>\n" );
document.write( "Ilda </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #392255 by </B><A HREF=/tutors/aboutme.mpl?userid=MathTherapy><B>MathTherapy(10552)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathTherapy><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=MathTherapy><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=392255\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Dear All,\r<BR>\n" );
document.write( "\n" );
document.write( "I wish if you could help me understand below, please?\r<BR>\n" );
document.write( "\n" );
document.write( "The problem says: Line X has a slope of 3. The line passes through Point X at (-2,-1) and also passes through Point Z., which has an x-coordinate of 0. What are the coordinates of Point Z?\r<BR>\n" );
document.write( "\n" );
document.write( "So I guess that I have to substitute the given values in the formula m=Y2-y1 / X2-X1 (sorry I could not find the small 2s and 1s in my keyboard). So I got: 3= -1-y/-2-0 then 3= -1-y / -2 and after that I am stuck. I do not know how to find the Y value.\r<BR>\n" );
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document.write( "Many thanks for your help.<BR>\n" );
document.write( "Ilda\r<BR>\n" );
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document.write( "What you're trying to find is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y%5B2%5D ALIGN=MIDDLE  ALT=\"y%5B2%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" >, the 2nd y-coordinate of the line\r<BR>\n" );
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document.write( "What you have is: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3+=+%28-+1+-+y%5B2%5D%29%2F%28-+2%29 ALIGN=MIDDLE  ALT=\"3+=+%28-+1+-+y%5B2%5D%29%2F%28-+2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-+6+=+-+1+-+y%5B2%5D ALIGN=MIDDLE  ALT=\"-+6+=+-+1+-+y%5B2%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" > ----- Cross-multiplying\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-+6+%2B+1+=+-+y%5B2%5D ALIGN=MIDDLE  ALT=\"-+6+%2B+1+=+-+y%5B2%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-+5+=+-+y%5B2%5D ALIGN=MIDDLE  ALT=\"-+5+=+-+y%5B2%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28-+5%29%2F-+1+=+y%5B2%5D ALIGN=MIDDLE  ALT=\"%28-+5%29%2F-+1+=+y%5B2%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5+=+y%5B2%5D ALIGN=MIDDLE  ALT=\"5+=+y%5B2%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Since <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y%5B2%5D ALIGN=MIDDLE  ALT=\"y%5B2%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 5, then coordinate point of Z  = (<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%280%29 ALIGN=MIDDLE  ALT=\"highlight_green%280%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >,<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%285%29 ALIGN=MIDDLE  ALT=\"highlight_green%285%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >)\r<BR>\n" );
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document.write( "Note:<BR>\n" );
document.write( "The fact that Z's x-coordinate is 0 signifies that Z is the y-intercept. Therefore, the general form of the equation of a line (y = mx + b) should be used to solve for b, which would give the y-coordinate of Z. This is much easier, but only because itw's given that Z's x-coordinate is 0.\r<BR>\n" );
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document.write( "Send comments and “thank-yous” to “D” at  MathMadEzy@aol.com </SPAN>\n" );
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