document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=984266>Question 984266</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Use the given conditions to write an equation for each line in point-slope form and slope-intercept form?\r<BR>\n" );
document.write( "\n" );
document.write( "X-intercept=4<BR>\n" );
document.write( "y-intercept=-2\r<BR>\n" );
document.write( "\n" );
document.write( "I tried to work this out and this is what I got..\r<BR>\n" );
document.write( "\n" );
document.write( "y=mx+b                                 <BR>\n" );
document.write( "0=m(4)+b                                <BR>\n" );
document.write( "-b    -b                                <BR>\n" );
document.write( "-b=4m\r<BR>\n" );
document.write( "\n" );
document.write( "y=mx+b<BR>\n" );
document.write( "-2=0+b<BR>\n" );
document.write( "b=-2\r<BR>\n" );
document.write( "\n" );
document.write( "So then I would do...<BR>\n" );
document.write( "4m=-2 and divide the 4 by 4 to get m alone and divide the -2 by 4 and get\r<BR>\n" );
document.write( "\n" );
document.write( "m= -2/4, which is simplified to m= -1/2.\r<BR>\n" );
document.write( "\n" );
document.write( "Its been a while since I have had a math class. Thank you for all your help!<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #605051 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=605051\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In y = mx+b, the b is always the y-intercept. So b = -2\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "y = mx+b\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "y = mx+(-2)\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "y = mx - 2\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Now plug in the point (4,0) from the fact that the x intercept is 4.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "y = mx - 2\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "0 = m(4) - 2\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "0 = 4m - 2\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "2 = 4m\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "4m = 2\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "m = 2/4\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "m = 1/2 ... take note that the slope is positive, not negative\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "-------------------------------------------------------\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "In the end, the equation in slope intercept form is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+expr%281%2F2%29x+-+2 ALIGN=MIDDLE  ALT=\"y+=+expr%281%2F2%29x+-+2\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "In point slope form, the equation is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+-+0+=+expr%281%2F2%29%28x-4%29 ALIGN=MIDDLE  ALT=\"y+-+0+=+expr%281%2F2%29%28x-4%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >. You can use the other point to get <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+%2B+2+=+expr%281%2F2%29%28x-0%29 ALIGN=MIDDLE  ALT=\"y+%2B+2+=+expr%281%2F2%29%28x-0%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );