document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=811161>Question 811161</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How do you make a now next rule from this table \r<BR>\n" );
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document.write( "x-y<BR>\n" );
document.write( "5-20<BR>\n" );
document.write( "15-40<BR>\n" );
document.write( "25-60<BR>\n" );
document.write( "35-80<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 #488631 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20849)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=488631\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> plot all given points and draw a line through\r<BR>\n" );
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document.write( "use two points to find the equation of a line:\r<BR>\n" );
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document.write( " <TR><TD  ALIGN=MIDDLE>Solved by <A  rel=nofollow HREF=http://wiki.algebra.com/index.php/Tutoring_-_pluggable_solvers>pluggable</A> solver: <A  rel=nofollow HREF=change_this_name10094.solver>Find the equation of line going through points</A></TD></TR>\n" );
document.write( "<TR><TD  ALIGN=LEFT>hahaWe are trying to find equation of form y=ax+b, where a is slope, and b is intercept, which passes through points (x1, y1) = (5, 20) and (x2, y2) = (15, 40).<BR>\n" );
document.write( "  Slope a is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a+=+%28y%5B2%5D-y%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29+=+%2840-20%29%2F%2815-5%29+=+2 ALIGN=MIDDLE  ALT=\"a+=+%28y%5B2%5D-y%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29+=+%2840-20%29%2F%2815-5%29+=+2\"   DISABLED_style= \"max-width:90%; height:auto;\" >.<BR>\n" );
document.write( "  Intercept is found from equation <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a%2Ax%5B1%5D%2Bb+=+y%5B1%5D ALIGN=MIDDLE  ALT=\"a%2Ax%5B1%5D%2Bb+=+y%5B1%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" >, or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2A5+%2Bb+=+10 ALIGN=MIDDLE  ALT=\"2%2A5+%2Bb+=+10\"   DISABLED_style= \"max-width:90%; height:auto;\" >. From that, <BR>\n" );
document.write( "  intercept b is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b=y%5B1%5D-a%2Ax%5B1%5D ALIGN=MIDDLE  ALT=\"b=y%5B1%5D-a%2Ax%5B1%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" >, or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b=20-2%2A5+=+10 ALIGN=MIDDLE  ALT=\"b=20-2%2A5+=+10\"   DISABLED_style= \"max-width:90%; height:auto;\" >.<BR>\n" );
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document.write( "  y=(2)x + (10)<BR>\n" );
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document.write( "  Your graph:<BR>\n" );
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document.write( "  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%0D%0A++drawing%28600%2C+600%2C+-30%2C+30%2C+-30%2C+30%2C%0D%0A++++graph%28+600%2C+600%2C+-30%2C+30%2C+-30%2C+30%2C+2%2Ax%2B10+%29%2C%0D%0A++++red%28+locate%28+5%2C+20%2C+%225%2C+20%22+%29%2C+circle%28+5%2C+20%2C+0.15+%29+%29%2C%0D%0A++++green%28+locate%28+15%2C+40%2C+%2215%2C+40%22+%29%2C+circle%28+15%2C+40%2C+0.15+%29+%29%0D%0A++%29%0D%0A++ ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "so, your equation is:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=2x+%2B+10 ALIGN=MIDDLE  ALT=\"y=2x+%2B+10\"   DISABLED_style= \"max-width:90%; height:auto;\" > and all given points lie on a line:\r<BR>\n" );
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document.write( "x-y<BR>\n" );
document.write( "5-20<BR>\n" );
document.write( "15-40<BR>\n" );
document.write( "25-60<BR>\n" );
document.write( "35-80\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+drawing%28+600%2C+600%2C+-100%2C+100%2C+-10%2C100%2Clocate%2835%2C80%2Cp4%285%2C20%29%29%2Ccircle%2835%2C80%2C0.4%29%2C+locate%2825%2C60%2Cp3%2825%2C60%29%29%2Ccircle%2825%2C60%2C0.4%29%2C+locate%285%2C20%2Cp1%285%2C20%29%29%2Ccircle%285%2C20%2C0.4%29%2Clocate%2815%2C40%2Cp2%2815%2C40%29%29%2Ccircle%2815%2C40%2C0.4%29%2Cgraph%28+600%2C+600%2C+-100%2C+100%2C+-10%2C+100%2C+2x+%2B+10%29+%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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