The table shows how much a carpenter charges for work. Is the relationship shown by the data in the table linear or nonlinear?

1 25
2 40
3 60
4 80
I think it is linear, but can you check my work?

2 answers

nonlinear.
why?
non-linear , because the increase between steps is not equal:
25+15 = 40
40+15 = 55
55+15 = 70
70+15 = 85
The data above is required for linearity.

t