A Day@SST Scenario
Comments
 Share
The version of the browser you are using is no longer supported. Please upgrade to a supported browser.Dismiss

 
$
%
123
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Still loading...
ABCDEFGHIJKLMNOPQRSTU
1
Scenario 1
2
3
It is the December holidays and you have decided to apply for part-time work at the fast food outlet, Macdonalds. The pay is $4 per hour.
4
5
Number of hours (x)012345
6
Amount earned in $(y)048121620
7
8
1What do you notice about the amount earned when the number of hours of work increases? Describe your observation in the box below.
9
10
11
2Let's see how the numbers in each column interact! We are apply the four operations on the numbers for each column. The first example has been done for you:
12
Number of hours (x)012345
13
Amount earned in $(y)048121620
14
Add: x + y0510152025
15
Subtract: x - y0-3-6-9-12-15
16
Product: xy04163664100
17
Divide: y/xundefined44444
18
19
3What do you notice about the numbers from the table?
Is there a pattern generated from each of the four operations?
Describe your observation in the box below.
20
21
Add: x + y
22
23
Subtract: x - y
24
25
Product: xy
26
27
Divide: y/x
28
29
30
4Which of the four operations (addition, subtraction, multiplication or division) gives a number which is the same for the table that you have completed?
31
32
33
In conclusion, the operation that gives a constant or the same number for your answer actually illustrates a DIRECT PROPORTION relationship.
34
35
5Let's draw a graph to illustrate the direct proportion relationship between the number of hours worked and the amount earned. Key in the numbers for the table given above to generate the graph.
36
37
Number of hours (x)012345
38
Amount earned in $(y)048121620
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
Loading...
 
 
 
Original: Scenario 1
Original: Scenario 2
Copy of Original: Scenario 1
Copy of Original: Scenario 2