document.write( "Question 675128: if f(x)=3-6x,find f-1(9) \n" ); document.write( "

Algebra.Com's Answer #419585 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi
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document.write( "f(x)=3-6x
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document.write( " y = 3 - 6x   ||Finding the Inverse (interchanging the x and y )
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document.write( " x = 3 - 6y'
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document.write( " 6y' = 3-x
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document.write( " y' = (3-x)/6
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document.write( "f '(9) = (3-9)/6 = -6/6 = -1 \n" );
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