Is the table below a function?

For the table below:

Is this a function?
For the table below:

Is this linear?
On the way home from school, Linda walks at the same rate, and then stops for some time. She then runs the rest of the way. Sketch a graph measuring distance as a function of time.
Is the graph below a function? Show how you know in the "show your work" section.

Fill out the table for the function rule f(x) = 5x - 3
| x | f(x)
| 1 |
| 2 |
| 3 |
| 4 |
| 5 |
The relation below is not a function. Select the points that make it not a function.

The table below is linear. Fill it out so that it stays linear.
X | Y
1 | 2
2 | 5
3 |
For the set: {(4,2), (6,-3), (7,3), (6, j), (10,8), (h,3)} to be a function, what MUST be the value of j?
For the set: {(4,2), (6,-3), (7,3), (6, j), (10,8), (h,3)} to be a function, select the value(s) that could NOT be h.