document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=937058>Question 937058</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a. Stephen is walking from his house to his friend Sharon's house. When he is 12 blocks away, he looks at his watch. He looks again when he is 8 blocks away and finds that 6 minutes have passed. Write two ordered pairs for these data in the form (time, blocks).\r<BR>\n" );
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document.write( "b. Write a linear equation for these two points.\r<BR>\n" );
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document.write( "c. What is the total time it takes Stephen to reach Sharon's house?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #570491 by </B><A HREF=/tutors/aboutme.mpl?userid=TimothyLamb><B>TimothyLamb(4379)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=TimothyLamb><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=TimothyLamb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=570491\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x = time<BR>\n" );
document.write( "y = number of blocks remaining to sharon's house<BR>\n" );
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document.write( "(0,12)<BR>\n" );
document.write( "(6,8)<BR>\n" );
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document.write( "slope = dy/dx<BR>\n" );
document.write( "m = (12-8)/(0-6)<BR>\n" );
document.write( "m = -4/6 = -2/3<BR>\n" );
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document.write( "y - 12 = (-2/3)(x - 0)<BR>\n" );
document.write( "y = (-2/3)x + 12<BR>\n" );
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document.write( "time to reach sharon's:<BR>\n" );
document.write( "0 = (-2/3)x + 12<BR>\n" );
document.write( "(2/3)x = 12<BR>\n" );
document.write( "x = 12*3/2<BR>\n" );
document.write( "x = 18 minutes<BR>\n" );
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