document.write( "Question 925919: Substitute 0 for y in the rule for f(x) and solve for x
\n" ); document.write( " F(x)=-4x-8 \n" ); document.write( "
Algebra.Com's Answer #561837 by TimothyLamb(4379)\"\" \"About 
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F(x) = -4x - 8
\n" ); document.write( "F(x) = -4x - 8 = 0
\n" ); document.write( "-4x = 8
\n" ); document.write( "x = 8/-4
\n" ); document.write( "x = -2
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