This is a practice understanding of piecewise functions from an analytic viewpoint.

1 : Determine if the following piecewise definition is a function or not.

If the above piecewise definition is a function, enter . If it is not a function, then enter .

2 : Determine if the following piecewise definition is a function or not.

If the above piecewise definition is a function, enter . If it is not a function, then enter .

3 : Determine if the following piecewise definition is a function or not.

If the above piecewise definition is a function, enter . If it is not a function, then enter .

4 : Determine if the following piecewise definition is a function or not.

If the above piecewise definition is a function, enter . If it is not a function, then enter .

5 : Determine if the following piecewise definition is a function or not.

If the above piecewise definition is a function, enter . If it is not a function, then enter .