document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=387552>Question 387552</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the slope and the y-intercept of each line whose equation is given. m = &#8722;3; (&#8722;2,1) SOMEONE PLEASE HELP !!!!!!!!!!! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #273983 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=273983\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> m is the slope and the line is passing through the point (x,y) = (-2,1)\r<BR>\n" );
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document.write( "This means that x = -2 and y = 1 at that point on the graph.\r<BR>\n" );
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document.write( "the slope intercept form of the equation of a straight line is y = m*x + b\r<BR>\n" );
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document.write( "m is the slope<BR>\n" );
document.write( "b is the y-intercept\r<BR>\n" );
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document.write( "replace m with -3 to get:\r<BR>\n" );
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document.write( "y = -3x + b\r<BR>\n" );
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document.write( "replace y with 1 and x with -2 and then solve for b.\r<BR>\n" );
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document.write( "you get:\r<BR>\n" );
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document.write( "1 = -3*(-2) + b\r<BR>\n" );
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document.write( "this becomes:\r<BR>\n" );
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document.write( "1 = 6 + b\r<BR>\n" );
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document.write( "this results in b = -5\r<BR>\n" );
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document.write( "your equation becomes:\r<BR>\n" );
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document.write( "y = -3x - 5\r<BR>\n" );
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document.write( "graph of your equation looks like this:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28600%2C600%2C-5%2C5%2C-15%2C15%2C-3x-5%29 ALIGN=MIDDLE  ALT=\"graph%28600%2C600%2C-5%2C5%2C-15%2C15%2C-3x-5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "you can see that the graph passes through the point (-2,1)\r<BR>\n" );
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document.write( "when x = -2, y = -3*(-2) - 5 = 6 - 5 = 1\r<BR>\n" );
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document.write( "since the slope is -3, then for every + 1 unit change in the value of x, the value of y should change by - 3 units.\r<BR>\n" );
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document.write( "when x = 0, y = -5.<BR>\n" );
document.write( "when x = 1, y = -8.<BR>\n" );
document.write( "when x = 1, y = -11.<BR>\n" );
document.write( "etc.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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