Question 49329
f(x)= 1/x-1 (one over x minus one)
 for simplicity think of domain as x values and range as y values.  The question asks what values of x are not allowed.  Remembering that division by 0 is not allowed.  You want all values of x such that x-1=0 (these are not permitted) so solving our equation we get x=1.

1 is excluded from the domain of f(x)=1/x-1

f(x)= 3x+2 Remember that any value of x you plug in will yield a valid value for y so there are no numbers excluded from the domain of this function