document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=638158>Question 638158</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find an equation of the line having the given slope and containing the given point.\r<BR>\n" );
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document.write( "m=7/8, (1,-2) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #402052 by </B><A HREF=/tutors/aboutme.mpl?userid=DrBeeee><B>DrBeeee(684)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=DrBeeee><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=402052\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> General equation of a straight line is <BR>\n" );
document.write( "y = mx + b. this is called the slope-intercept form because m stands for the slope and b is the y-intercept. This line passes through the point (0,b)<BR>\n" );
document.write( "You want m=7/8, so you want<BR>\n" );
document.write( "y = (7/8)x +b<BR>\n" );
document.write( "To get the value of b, substitute the cordinates of the point (1,-2) giving<BR>\n" );
document.write( "-2 = (7/8)(1) + b <BR>\n" );
document.write( "Now solve for b<BR>\n" );
document.write( "b = -2 - 7/8<BR>\n" );
document.write( "b = -23/8<BR>\n" );
document.write( "Your final equation is<BR>\n" );
document.write( "y = (7/8)x - 23/8<BR>\n" );
document.write( "Does this go through (1,-2)?<BR>\n" );
document.write( "Does [-2 = (7/8)(1) - 23/8]?<BR>\n" );
document.write( "Does [-2 = 7/8-23/8]?<BR>\n" );
document.write( "Does [-2 = -16/8]?<BR>\n" );
document.write( "Does [-2 = -2]? Yes<BR>\n" );
document.write( "Answer: y = (7/8)x - 23/8 </SPAN>\n" );
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