The domain of a function is the set of all possible input values (or “x” values). It’s the collection of values you can plug into the function without causing any issues, like division by zero or taking the square root of a negative number.
The range is the set of all possible output values (or “y” values) based on the inputs from the domain. It represents all the values that the function can output when you use every value in the domain.
– The domain is all real numbers because you can square any real number.
– The range is all non-negative real numbers (y ≥ 0) because squaring any real number cannot produce a negative result.