document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=208884>Question 208884</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need assistance to try and understand how to come up with the equation to describe the rule(x,y) for (-1,-7),(0,-3),(1,1),(2,5),(4,13),(5,17)\r<BR>\n" );
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document.write( "Currently I was advised the answer is y=4x-3 , but I need to have a full understanding or a break down of how the answer was arrived.\r<BR>\n" );
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document.write( "Thanks! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #157954 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=157954\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I need assistance to try and understand how to come up with the equation to describe the rule(x,y) for (-1,-7),(0,-3),(1,1),(2,5),(4,13),(5,17) <BR>\n" );
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document.write( "Notice that the x-values increase by 1<BR>\n" );
document.write( "Notice that the y-values increase by 4<BR>\n" );
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document.write( "This constant increase tells you the relation is linear.<BR>\n" );
document.write( "So the equation looks like y = mx + b<BR>\n" );
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document.write( "The constant increase of the y-values is the slope: m = 4<BR>\n" );
document.write( "The y-value that goes with x=0 is the y-intercept: b = -3<BR>\n" );
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document.write( "So the equation is y = 4x-3<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "PS: Reply to stanbon@comcast.net as the algebra.com feedback<BR>\n" );
document.write( "program is not working.<BR>\n" );
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