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# Reading linear relation graphs

- Lesson: 1a1:37
- Lesson: 1b1:36
- Lesson: 1c2:03
- Lesson: 2a1:29
- Lesson: 2b4:08
- Lesson: 2c1:02
- Lesson: 3a2:51
- Lesson: 3b1:35

### Reading linear relation graphs

#### Lessons

- 1.
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

a)Plot the data above on a graph.b)From the graph, how much money can John earn after working for 3.5 hours?c)From the graph, how long does John need to work in order to make 50 dollars? - 2.
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

a)Plot the data above on a graph.b)From the graph, what is the distance of the diver from water surface after diving for 40 minutes?c)From the graph, what is the time when the diver is - 35 feet from water surface? - 3.An online clothing company can earn $4 for every t-shirt they sell.

a)How much can the company earn by selling 55 t-shirts?b)How many t-shirts does the company need to sell so that they would earn $200?