Question

For b(x) = x + 1 and k(x) = 2x – 1, select the true statement.
Answer

1/2 is excluded from the domain of (b / k)(x).

1/2 is excluded from the domain of (k / b)(x).

1 is excluded from the domain of (b / k)(x).

1 is excluded from the domain of (k / b)(x).

Answer 1

if you have an equation \[f(x) = \frac{ x+1 }{x-1}\]

x cannot equal 1, because then the denominator would equal 0, and you cannot divide by 0

Answer 2

that was just an example