Question 1087371
<font color="black" face="times" size="3">I'm assuming the function is {{{f(x) = -(1/3)x-1}}}


If so, then replace f(x) with x. Afterwards, solve for x


{{{f(x) = -(1/3)x-1}}}


{{{x = -(1/3)x-1}}}


{{{3*x = 3*(-(1/3)x-1)}}} Multiply both sides by 3 (to clear out the fraction)


{{{3*x = -x-3}}} Distribute


{{{3*x+x = -x-3+x}}} Add x to both sides


{{{4x = -3}}}


{{{(4x)/4 = -3/4}}} Divide both sides by 4 to isolate x


{{{x = -3/4}}}


The answer is {{{x = -3/4}}}</font>