document.write( "Question 201412: Find an equation of the the line satisfying the given conditions.\r
\n" ); document.write( "\n" ); document.write( "Through (-3, -2); perpendicular to -7x + 9y = -42
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Algebra.Com's Answer #151669 by checkley77(12844)\"\" \"About 
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(-3, -2); perpendicular to
\n" ); document.write( "-7x + 9y = -42
\n" ); document.write( "9Y=7X-42
\n" ); document.write( "Y=7X/9-42/9 THIS LINE HAS A SLOPE=7/9 (RED LINE)
\n" ); document.write( "A PERPENDICULAR LINE TO THIS LINE HAS A SLOPE=-9/7
\n" ); document.write( "Y=mX+b
\n" ); document.write( "-2=-9/7*-3+b
\n" ); document.write( "-2=27/7+b
\n" ); document.write( "b=-2-27/7
\n" ); document.write( "b=(-2*7-27)/7
\n" ); document.write( "b=(-14-27)/7
\n" ); document.write( "b=-41/7 THIS IS THE Y INTERCEPT.
\n" ); document.write( "y=-9x/7-41/7 (GREEN LINE)
\n" ); document.write( "\"+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+10%2C+7x%2F9+-42%2F9%2C-9x%2F7+-41%2F7+%29+\" (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions 7x/9 -42/9 and -9x/7 -41/7). \r
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