Answer:
(-∞, -1) ∪ (-1, ∞)
Explanation:
You want to know the domain of f(x) = (3x -7)/(x +1).
Domain
The domain of a function is the set of x-values for which it is defined. The function f(x) is defined for all real numbers except the value of x that makes the denominator zero: x = -1. In interval notation, that is ...
(-∞, -1) ∪ (-1, ∞)