Read restricted graphs and horizontal level sets
The function has rule
\[f(x)=-\left(x\right)^{2}\]
Its stated domain is \((-1,4]\). The stated interval gives the domain. The larger plotting window does not add inputs to the function
The plotting window is x from -2 to 5 and y from -18 to 2
The exact boundary points are (-1,-1) and (4,-16). The internal data are (0,0)
The x-intercept is (0,0); the y-intercept is (0,0)