Simplify. express using POSITIVE exponents. r^-3 * r^5 =? PLEASE HEL

Step-by-step explanation:

I am assuming you mean which would by typed on one line as

y = 3/(x - 1).

The function's formula has a denominator, so one must avoid having the denominator equal to 0 (division by 0 is undefined).

If x - 1 = 0, then x = 1.  The number to avoid is 1.

The domain is all real numbers except 1.