Reflect on the concept of function. What concepts (only the names) did you need to accommodate the concept of function in your m
ind? What is the simplest function you can imagine? In your day to day, is there any occurring fact that can be interpreted as a function? Is it possible to view a function? What strategy are you using to get the graph of a function?
The value of x cannot be less than 6 because that would make the term in the square root part negative. There is no real square root of a negative vale.