Respuesta :
This relationship is a proportional relationship and the direct proportion equation is y = 1/3x
Part A Is this a proportional relationship?
The table of values is given as:
x - Number of Days y - Cost
6 2
9 3
24 8
3 1
Divide y by x in each of the above values
So, we have
2/6 = 1/3
3/9 = 1/3
8/24 = 1/3
1/3 = 1/3
See that the results are the same i.e. 1/3
Hence, this relationship is a proportional relationship
Part B If this is a proportional relationship, what is the constant?
In (a), we have:
2/6 = 1/3
3/9 = 1/3
8/24 = 1/3
1/3 = 1/3
The results represent the constant of proportionality
Hence, the constant of proportionality is 1/3
Part C If this is a proportional relationship, write a direct proportion equation.
We have
k = 1/3
A direct proportion equation is represented as
y = kx
So, we have
y = 1/3x
Hence, the direct proportion equation is y = 1/3x
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