document.write( "Question 387260: Write an equation of the line that passes through the point (18, −7) and is perpendicular to the line y = −9x + 8. \n" ); document.write( "
Algebra.Com's Answer #273736 by mananth(16946)\"\" \"About 
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Write an equation of the line that passes through the point (18, -7) and is perpendicular to the line y = -9x + 8.
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\n" ); document.write( "(18, -7) and is perpendicular to the line y = -9x + 8.
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\n" ); document.write( "y = -9x + 8.
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\n" ); document.write( "compare with y= mx +b
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\n" ); document.write( "m= -9 the slope
\n" ); document.write( "The perpendicular line will have slope 1/9.
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\n" ); document.write( "(18, -7) and m= 1/9
\n" ); document.write( "Find b by plugging (18, -7) m= 1/9 ,
\n" ); document.write( " y = mx + b
\n" ); document.write( "-7=18*1/9 +b
\n" ); document.write( "-7=2+b
\n" ); document.write( "b=-9
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\n" ); document.write( "The equation will be
\n" ); document.write( "y = (x/9)-9
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\n" ); document.write( "m.ananth@hotmail.ca
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