document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=524148>Question 524148</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find an equation for the line with the given properties. Express the equation in slope-intercept form.<BR>\n" );
document.write( "Containing the points P=(-2,1) and Q=(-1,-1)  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #347616 by </B><A HREF=/tutors/aboutme.mpl?userid=oberobic><B>oberobic(2304)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=oberobic><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=347616\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> m = (1-(-1)) / (-2-(-1))<BR>\n" );
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document.write( "m = 2 / -1<BR>\n" );
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document.write( "m = -2 = slope<BR>\n" );
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document.write( "y = -2x + b<BR>\n" );
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document.write( "Use one of the points to find 'b'<BR>\n" );
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document.write( "1 = -2*(-2) + b<BR>\n" );
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document.write( "1 = 4 + b<BR>\n" );
document.write( "b = -3<BR>\n" );
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document.write( "y-intercept occurs when x=0, which is the point (0,-3).<BR>\n" );
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document.write( "The equation in slope-intercept form is:<BR>\n" );
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document.write( "y = -2x -3<BR>\n" );
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document.write( "x-intercept occurs when y=0, so set y=0 and find x<BR>\n" );
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document.write( "0 = -2x -3<BR>\n" );
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document.write( "2x = -3<BR>\n" );
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document.write( "x = -3/2<BR>\n" );
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document.write( "So, the x-intercept = (-3/2, 0).<BR>\n" );
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document.write( "A graph is always helpful.<BR>\n" );
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