The table shows a proportional relationship between the weight on a spring scale and the distance the spring has stretched.

Mathematics

2 answers:

Svetlanka [38]3 years ago

7 0

Answer:

See below

Step-by-step explanation:

As per the first row of proportional relationship, the proportion is:

y = kx
28 = k*20
k = 28/20 = 1.4

The function is therefore:

y = 1.4x

a) Table is filled in below:

distance (cm) | weight (newtons)

20 | 28

55 | 55*1.4 = 77

140/1.4 = 100 | 140

1 | 1*1.4 = 1.4

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b) The scale should consider the coefficient 1.4, therefore x- axis will have a scale of 100 with intervals of 1 cm and y- axis will have a scale of 140 with intervals of 1.4 newtons

Ira Lisetskai [31]3 years ago

3 0

Answer:

55= 39 2/7

Step-by-step explanation:

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I hope this answer will help you. Have a nice day !