Question

Please help 15 points (picture)

Answer 1

Linear because the account balance increases by a constant 20.

Explanation:

→ The first difference is 20 for all values because :

20 - 0 = 20

40 - 20 = 20

60 - 40 = 20

80 - 60 = 20

100 - 80 = 20

Answer 2

the first difference are all 20.

since the first differences of this relation are constant, it is a linear relation