10. find the domain about

The domain of the function is all real numbers! That’s because it’s a polynomial function, and polynomial functions are defined for every value of . You can plug in any number, positive, negative, or even zero, and you’ll get a valid output. So, in interval notation, the domain is .

Now, if you’re curious about parabola shapes like this one, they are formed by quadratic functions such as this. The graph of this function is a parabola that opens upwards, thanks to the positive coefficient of . It’s interesting to note that every parabola has a vertex, and for this one, the vertex can help you quickly understand where the minimum point lies on the graph!