Let f (x) = - 6x + 3 and g (x) = 5x + 4. Find and state its domain.

The domain of a function is the set of "input" or argument values for which the function is defined. The domain is all the values that x is allowed to take on.

The domain of the function f (x) = - 6x + 3 are all real numbers.

The domain of a function g (x) = 5x + 4 are also all real number.