Answer:
Vertex - (0,4)
Domain - ![D=[x|x\in\mathbb{R}]](https://tex.z-dn.net/?f=D%3D%5Bx%7Cx%5Cin%5Cmathbb%7BR%7D%5D)
Range - ![R=[y|y\leq 4]](https://tex.z-dn.net/?f=R%3D%5By%7Cy%5Cleq%204%5D)
Step-by-step explanation:
Given : The graph of a parabola
To find : The values of the parabola - Vertex ,Domain and Range
Solution :
To identify the vertex the given parabola given by equation

Vertex is given by 
where (h,k) are the vertex.
Comparing with equation,
Vertex is (h,k)=(0,4)
Domain is the set of value where function is defined.
The domain of given function is all real numbers.
![D=[x|x\in\mathbb{R}]](https://tex.z-dn.net/?f=D%3D%5Bx%7Cx%5Cin%5Cmathbb%7BR%7D%5D)
Range is the set of value that corresponds to the domain.
![R=[y|y\leq 4]](https://tex.z-dn.net/?f=R%3D%5By%7Cy%5Cleq%204%5D)