No solution not sure if I’m right
Answer: x-3y+21=0
Step-by-step explanation:
move the constant to the left then divide both sides then booom
Vertex is

and minimum value of f(x) is 12
Hope this helps
Answer:
Correct Option is d 
Step-by-step explanation:
For completing the square our equation should be in the form of 
In the given equation we have:

Correct Option is d 