document.write( "Question 450557: Hi,
\n" ); document.write( "Find the distance from point (2, -3) to the line \"3x-y=4\"\r
\n" ); document.write( "\n" ); document.write( "Thanks :D
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Algebra.Com's Answer #309984 by Alan3354(69443)\"\" \"About 
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Find the distance from point (2, -3) to the line \"3x-y=4\"
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\n" ); document.write( "The distance from a point to a line can be an infinite # of values.
\n" ); document.write( "To find the shortest distance:
\n" ); document.write( "The slope of 3x-y = 4 is 3.
\n" ); document.write( "Lines perpendicular will have a slope that's the negative inverse, m = -1/3.
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\n" ); document.write( "Find the eqn of the line with a slope of -1/3 that passes thru (2,-3)
\n" ); document.write( "Use y = mx + b
\n" ); document.write( "-3 = (-1/3)*2 + b
\n" ); document.write( "b = -7/3
\n" ); document.write( "--> y = -x/3 - 7/3 is the eqn of the line thru (2,-3) perpendicular to the other line.
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\n" ); document.write( "Find the intersection of the 2 lines
\n" ); document.write( "3x - y = 4
\n" ); document.write( "Sub for y
\n" ); document.write( "3x - (-x/3 - 7/3) = 4
\n" ); document.write( "10x/3 + 7/3 = 4
\n" ); document.write( "10x + 7 = 12
\n" ); document.write( "x = 1/2
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\n" ); document.write( "y = -5/2
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\n" ); document.write( "Find the distance from (2,-3) to (1/2,-5/2)
\n" ); document.write( "\"d+=+sqrt%28diffy%5E2+%2B+diffx%5E2%29+=+sqrt%281%2F4+%2B+9%2F4%29\"
\n" ); document.write( "d = sqrt(10)/2
\n" ); document.write( "d =~ 1.5811
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