document.write( "Question 1148569: write the equation of the line that passes through the point (2, -4) and is perpendicular to the to the line described by x+2y=12 \n" ); document.write( "
Algebra.Com's Answer #769902 by rothauserc(4718)\"\" \"About 
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x +2y = 12
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\n" ); document.write( "rewrite the line's equation in slope y-intercept form
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\n" ); document.write( "y = -x/2 +6
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\n" ); document.write( "slope of the line is -1/2
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\n" ); document.write( "the slope of the line perpendicular to our line is the negative reciprocol
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\n" ); document.write( "slope is -(1/(-1/2)) = 2
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\n" ); document.write( "using the slope y-intercept form
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\n" ); document.write( "y = 2x +b
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\n" ); document.write( "now subsitute the x coordinate for x and the y coordinate for y using the given point
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\n" ); document.write( "-4 = 2(2) +b
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\n" ); document.write( "b = -8
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\n" ); document.write( "y = 2x -8
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\n" ); document.write( "the general form is
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\n" ); document.write( "2x -y = 8
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