document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=478719>Question 478719</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The line y=0.12x+0.76 represents an estimate of the average cost of gasoline for each year. The line 0.11x-y=-0.85 estimates the price of gasoline in January of each year \r<BR>\n" );
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document.write( "a)Do you expect the lines to be intersecting, parallel, or perpendicular? Explain your reasoning.\r<BR>\n" );
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document.write( "b)Use the equations of the lines to determine if they are parallel. What did you find?\r<BR>\n" );
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document.write( "c)Did your answer to part b confirm your expectation in part a?<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 #328095 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=328095\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The line y=0.12x+0.76 represents an estimate of the average cost of gasoline for each year.<BR>\n" );
document.write( " The line 0.11x-y=-0.85 estimates the price of gasoline in January of each year.<BR>\n" );
document.write( ":<BR>\n" );
document.write( "The first equation is in the slope/intercept form; y = mx + b<BR>\n" );
document.write( "y = .12x + .76<BR>\n" );
document.write( "Put the 2nd equation in the slope/intercept form also<BR>\n" );
document.write( ".11x - y = -.085<BR>\n" );
document.write( ".11x + .085 = y<BR>\n" );
document.write( "or <BR>\n" );
document.write( "y = .11x + .085<BR>\n" );
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document.write( "a)Do you expect the lines to be intersecting, parallel, or perpendicular? Explain your reasoning.<BR>\n" );
document.write( "The slope of the first equation is .12; the 2nd equation is .11, therefore<BR>\n" );
document.write( "they are not parallel, and will intersect<BR>\n" );
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document.write( "b)Use the equations of the lines to determine if they are parallel.<BR>\n" );
document.write( " What did you find?<BR>\n" );
document.write( "parallel lines have the same slope, these don't<BR>\n" );
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document.write( "c)Did your answer to part b confirm your expectation in part a? </SPAN>\n" );
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