document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=106527>Question 106527</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the slope and y-intercept. x = -1.  I'm not sure if my slope is 0 or undefined or if my y-intercept is -1 or there is no y-intercept.\r<BR>\n" );
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document.write( "y = mx+b<BR>\n" );
document.write( "y = 0 + (-1)<BR>\n" );
document.write( "y = -1 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #77524 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=77524\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the slope and y-intercept. x = -1.  I'm not sure if my slope is 0 or undefined or if my y-intercept is -1 or there is no y-intercept.<BR>\n" );
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document.write( "You are having trouble because you are taking an equation which is not<BR>\n" );
document.write( "a function and trying to force it into a function form. Notice that you<BR>\n" );
document.write( "started with x=-1 and ended up with y=-1 for no reason.<BR>\n" );
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document.write( "x=-1 graphs as a vertical line containing all points where x=-1.<BR>\n" );
document.write( "So (-1,0) and (-1,2) would be two points on the line.<BR>\n" );
document.write( "Then the slope would be (2-0)/(-1--1) = 2/0 which is \"undefined\".<BR>\n" );
document.write( "So the slope is \"undefined\".<BR>\n" );
document.write( "And since the line is parallel to the y-axis, there is no y-intercept.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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