For this case, the first thing we must do is define variables.
We have then:
x: amount of weight in pounds
y: total cost of bananas.
The equation that models the problem is:
[tex] y = 0.59x
[/tex]
We observe that the relationship is linear. Therefore, the variables are proportional.
The proportionality constant is:
[tex] k = 0.59
[/tex]
Answer:
the constant of proportionality is:
[tex] k = 0.59
[/tex]