The domain is \( (-\infty, \infty) \).
The range of the function \( f(x) = 6^{x-2} \) is all positive real numbers because an exponential function with a positive base never reaches zero or negative values.
The range is \( (0, \infty) \).
For the function \( f(x) = 6^{x-2} \), as \( x \) approaches negative infinity, \( 6^{x-2} \) approaches zero. Therefore, the horizontal asymptote is \( y = 0 \).
The horizontal asymptote is \( y = 0 \).