document.write( "Question 235185: how do u determine the value of r so the line passing through each pair of points has the given slope. (6,3) , (r,2), m= 1\2 \n" ); document.write( "
Algebra.Com's Answer #173318 by ankor@dixie-net.com(22740)\"\" \"About 
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how do u determine the value of r so the line passing through each pair of points has the given slope.
\n" ); document.write( " (6,3) , (r,2), m= 1\2
\n" ); document.write( ":
\n" ); document.write( "Use the slope formula: \"%28y2-y1%29%2F%28x2-x1%29\" = m
\n" ); document.write( ":
\n" ); document.write( "\"%282-3%29%2F%28r-6%29\" = \"1%2F2\"
\n" ); document.write( ":
\n" ); document.write( "\"%28-1%29%2F%28r-6%29\" = \"1%2F2\"
\n" ); document.write( "Cross multiply
\n" ); document.write( "1(r-6) = -1(2)
\n" ); document.write( "r - 6 = -2
\n" ); document.write( "r = -2 + 6
\n" ); document.write( "r = 4
\n" ); document.write( ":
\n" ); document.write( "Find the equation using the point/slope formula
\n" ); document.write( "y - 3 = \"1%2F2\"(x - 6)
\n" ); document.write( "y - 3 = \"1%2F2\"x - 3
\n" ); document.write( "y = \"1%2F2\"x - 3 + 3
\n" ); document.write( "y = \"1%2F2\"x
\n" ); document.write( ":
\n" ); document.write( "Check the points 6,3 and 4,2 in the equation
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