Question

Compare the domain and the range for the parent quadratic function to the domain and the range for the parent linear function

Answer 1

The parent linear function is
y = x
The parent quadratic function is
y = x²

The domain of the parent linear function is all real numbers
The range of the parent linear function is all real numbers

The domain of the parent quadratic function is all real numbers
The range of the parent quadratic function is all positive real numbers including 0.