document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=850135>Question 850135</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I have this problem I need to figure out and I'm having a problem understanding the example. I need a STEP BY STEP(meaning no steps skipped)to see how the one would arrive at the answer. This is not the actual problem but the example to the problem I need to do. I need to find the answer to both the slope and y-intercept.\r<BR>\n" );
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document.write( "Give the slope and y-intercept for the line that passes through (-7,9) and (6,12).\r<BR>\n" );
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document.write( "Please explain it as if you were to explain it to a 5 year old.\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #512031 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=512031\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Give the slope and y-intercept for the line that passes <BR>\n" );
document.write( "through (-7,9) and (6,12). <BR>\n" );
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document.write( "Form: y = mx + b<BR>\n" );
document.write( "m is the slope<BR>\n" );
document.write( "b is the y-intercept<BR>\n" );
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document.write( "slope = (change in y)/(corresponding change in x) = (12-9)/(6--7) = 3/13<BR>\n" );
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document.write( "Using x = 6, y = 12, m = 3/13, solve for \"b\":<BR>\n" );
document.write( "12 = (3/13)6 + b <BR>\n" );
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document.write( "12 = (18/13) + b<BR>\n" );
document.write( "Multiply thru by 13 to get:<BR>\n" );
document.write( "13*12 = 18 + 13b<BR>\n" );
document.write( "156 = 18 + 13b<BR>\n" );
document.write( "Subtract 18 from both sides<BR>\n" );
document.write( "13b = 138<BR>\n" );
document.write( "Divide both sides by 13 to get:<BR>\n" );
document.write( "b = 10.62 when rounded to the hundreth's place<BR>\n" );
document.write( "b is the y- intercept<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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