Question

Find the domain of the function. Write your answer in interval
notation. f(x)=-4x² + 5x +1

Answer 1

All real numbers

(-∞, ∞)

Explanation:

Domain is the set of x-values that can be inputted into function f(x).

We see here that our function is a parabola. We also see that we can plug in any number x and we would get an output y. Therefore, our domain is all real numbers:

(-∞, ∞)