for a linear function, the rise and run must be consistent every time.
on all of them, the run is one unit, so the jump on the rise must be the same each time. Let's notice the rise for example the two on the far-right, one goes from 7 to 9, that's two units, then from 9 to 13? the hell? that's four units, is inconsistent, now the other table shows from 0 to 6, that's six units, then from 6 to 16? that's sixteen units, inconsistent rise.
Check the picture below.