document.write( "Question 182441: Please help me solve this problem.\r
\n" ); document.write( "\n" ); document.write( "An equation in slope-intercept form for the line passing through each pair of points:
\n" ); document.write( "(9, -1) and 6, -2)\r
\n" ); document.write( "\n" ); document.write( "Thank you,
\n" ); document.write( "Doris \n" ); document.write( "
Algebra.Com's Answer #136940 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
Please help me solve this problem.
\n" ); document.write( "An equation in slope-intercept form for the line passing through each pair of points:
\n" ); document.write( "(9, -1) and 6, -2)
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\n" ); document.write( "The hard way:
\n" ); document.write( "Find the slope
\n" ); document.write( "slope, m, = diffy/diffx
\n" ); document.write( "m = (-1-(-2))/(9-6)
\n" ); document.write( "m = 1/3
\n" ); document.write( "--------------
\n" ); document.write( "Now use either point in
\n" ); document.write( "y-y1 = m*(x-x1) where (x1,y1) is the point
\n" ); document.write( "y-(-2) = (1/3)*(x-6)
\n" ); document.write( "y+2 = x/3 - 2
\n" ); document.write( "y = (1/3)x - 4
\n" ); document.write( "------------
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\n" ); document.write( "The easy way:
\n" ); document.write( "|x y +1|
\n" ); document.write( "|9 -1 1| = 0
\n" ); document.write( "|6 -2 +1|
\n" ); document.write( "- - - - -
\n" ); document.write( "x*(-1+2) - y*(9-6) +1*(-18+6) = 0
\n" ); document.write( "x -3y -12 = 0
\n" ); document.write( "x-3y = 12
\n" ); document.write( "x = 3y+12
\n" ); document.write( "y = (1/3)x - 4\r
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