document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=42060>Question 42060</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/1885145675/algebrahomeworkh>algebra 1</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> for the line passing through (-4,2)and (1,-2)<BR>\n" );
document.write( "a. compute the slope<BR>\n" );
document.write( "b. find another point with integer coordinates on this line. \r<BR>\n" );
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document.write( "Find the equation of each line below<BR>\n" );
document.write( "a. the slope of the line is -3 and it passes though the poine of (-2.6)<BR>\n" );
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document.write( "                             2\r<BR>\n" );
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document.write( "b. the line passes through the the two points (1,-3)and (2,-1) \r<BR>\n" );
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document.write( "thank you. robbie  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #27272 by </B><A HREF=/tutors/aboutme.mpl?userid=ind_blade><B>ind_blade(2)</B></A><img src=\"/images/stars/iconNewId_16x16.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ind_blade><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=27272\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> for the line passing through (-4,2)and (1,-2)<BR>\n" );
document.write( "a. compute the slope\r<BR>\n" );
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document.write( "slope = (change in y) / (change in x)<BR>\n" );
document.write( "      = (-2 - 2) / (1 - (-4))<BR>\n" );
document.write( "      = ( -4 ) / 5 = -4/5\r<BR>\n" );
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document.write( "b. find another point with integer coordinates on this line.\r<BR>\n" );
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document.write( "equation of the line is : y= mx +b<BR>\n" );
document.write( "                          y = -4/5 (x) + b at point (1,-2)<BR>\n" );
document.write( "                          -2 = -4/5(1) + b so b = -6/5<BR>\n" );
document.write( "general formula for the line is:<BR>\n" );
document.write( "y = -4/5 (x) - 6/5 --> pick a value for x say 2 so:<BR>\n" );
document.write( "y = -4/5 (2) - 6/5 = -8/5 - 6/5 = -14/5<BR>\n" );
document.write( "so a point would be:  (2, -14/5)\r<BR>\n" );
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document.write( "\n" );
document.write( "Find the equation of each line below<BR>\n" );
document.write( "a. the slope of the line is -3 and it passes though the poine of (-2.6)\r<BR>\n" );
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document.write( " y = mx + b<BR>\n" );
document.write( " y = -3x + b for point (-2, 6) b = <BR>\n" );
document.write( " 6 = -3(-2) + b<BR>\n" );
document.write( "b = 0  so equation of line becomes --> y = -3x\r<BR>\n" );
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document.write( "b. the line passes through the the two points (1,-3)and (2,-1)\r<BR>\n" );
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document.write( "find slope like above:  (-1 - (-3))/(2-1) = 2<BR>\n" );
document.write( "y = 2x + b  for point (2, -1) b =<BR>\n" );
document.write( "-1 = 2(2) + b <BR>\n" );
document.write( "b = -5<BR>\n" );
document.write( "equation then is:  y = 2x - 5\r<BR>\n" );
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document.write( "thank you. robbie  </SPAN>\n" );
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