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According to the table below, determine the type of variation between atmospheric pressure of a mountain and altitude.

 

x

1

2

3

4

5

6

7

y

120

60

40

30

24

20

17

a)What variation model does this table represent?

direct variation

inverse variation

 

b)What is the model that relates y and x?

y=120x

y=120x2

y=120/x

y=120/x2

Correct!