To add, subtract, multiply or divide functions just do as the operation says. The domain of the new function will have the restrictions of both functions that made it. Divide has the extra rule that the function we are dividing by cannot be zero. read more
Addition of Functions The slope of f is 2; in other words, as x increases by 1, f (x) increases by 2. The slope of g is 1: as x increases by 1, g(x) increases by 1. read more