How do we investigate and graph radical equations? Are radical functions continuous or discrete? Ju?

There is a lot to learn before you try to graph a radical. For starters, a square root is not a function. The definition of a function is any process that gives one value out for each qualified value in. A square root gives two values for each input. So to graph it you pretend it is two functions and combine the graphs.
www.purplemath.com/modules/graphrad.htm