Question

Which of these tables represents a non-linear function?
A 2-column table with 4 rows. Column 1 is labeled x with entries 17, 18, 19, 20. Column 2 is labeled y with entries 20, 19, 18, 17.
A 2-column table with 4 rows. Column 1 is labeled x with entries 17, 18, 19, 20. Column 2 is labeled y with entries negative 16, negative 17, negative 18, negative 19.
A 2-column table with 4 rows. Column 1 is labeled x with entries 17, 18, 19, 20. Column 2 is labeled y with entries 16, 17, 19, 20.
A 2-column table with 4 rows. Column 1 is labeled x with entries 17, 18, 19, 20. Column 2 is labeled y with entries negative 20, negative 19, negative 18, negative 17.

Answer 1

it's a little hard to read, but still workable given the image captions

notice how all the tables have x-values that increase linearly (17, 18, 19, 20, so a +1 change each time). so simply look for the table that has y-values that increase non-linearly (**not** by adding or subtracting the same value each time)