Ezra is finding the perimeter of different-sized regular pentagons. There is a proportional relationship between the side length of the regular pentagon In Inches,
x, and the perimeter of the regular pentagon in inches, y.
x (side length in inches) y (perimeter in inches)
1
5
2
10
3
15
4
20
What is the constant of proportionality? Write your answer as a whole number or decimal.
inches in perimeter per inch in side length
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