The cost of 2pounds if potatoes is $3.78 what is the constant of proportionality that represents the relationship between the cost, y, to the number of pounds of potatoes, x?

The constant of proportionality is 1.89

Step-by-step explanation:

2 pounds = $3.78

1 pound = $3.78/2 = $1.89

Cost y is directly proportional to the pound of potato

y = 1.89x

The constant of proportionality is the cost of 1 pound of potato, and it is 1.89