# Reading linear relation graphs

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The table below shows the relation of working time and the amount of money that John earns.

Time,

*t*(hour)1

2

3

4

5

6

Amount of money,

*m*(dollar)10.5

21

31.5

42

52.5

63

The table below shows the distance of a scuba diver diving underwater in relation to time.

Time,

*t*(minute)10

15

20

25

30

35

Distance from water surface,

*f*(feet)- 15

- 22.5

- 30

- 37.5

- 45

- 52.5

- An online clothing company can earn $4 for every t-shirt they sell.