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The graph shows a proportional relationship between the number of books sold at a yard sale and the amount of money collected from book sales.

Book Sales Revenue






What is the constant of proportionality?
0.67
1
1.5
2

Respuesta :

Answer:

1.5

Step-by-step explanation:

6/4

Answer:

it's C. 1.5

Step-by-step explanation:

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