document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=212018>Question 212018</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0030565111/algebrahomeworkh>Precalculus</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> what's the equation for points (0,-5) (-3,-2)? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #160117 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=160117\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> what's the equation for points (0,-5) (-3,-2)?<BR>\n" );
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document.write( "Points don't have equations, lines and planes have equation.<BR>\n" );
document.write( "Since there are only 2 points, the only type of line that can be defined by them is a straight line, which has a linear equation.<BR>\n" );
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document.write( "To find the equation of the straight line passing thru these 2 points, first find the slope, m, of the line.<BR>\n" );
document.write( "n = diffy/diffx = (-2-5)/(-3-0)<BR>\n" );
document.write( "m = 7/3<BR>\n" );
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document.write( "Then use either point in<BR>\n" );
document.write( "y-y1 = m*(x-x1)<BR>\n" );
document.write( "y+5 = (7/3)x<BR>\n" );
document.write( "y = (7/3)x - 5  (slope-intercept form)<BR>\n" );
document.write( "7x - 3y = 15 (standard form) </SPAN>\n" );
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