|       Extend previous knowledge of a function to apply to general behavior and features of a function.
a. Understand that a function from one set (called the domain) to another set (called the range) assigns to each element of the domain exactly one element of the range.
b. Represent a function using function notation and explain that f(x) denotes the output of function f that corresponds to the input x.
c. Understand that the graph of a function labeled as f is the set of all ordered pairs (x,y) that satisfy the equation y=f(x)