If grapes sell for $0.65 per pound and $0.65 is the constant rate of change is it proportional why or why not?

Answer 1

Yes, it is proportional. This is because for every pound of grapes the cost is 0.65. Therefore, we are increasing at a constant rate which allows this to be proportional because given the lbs of grapes purchased and the cost of each lb we can calculate the total cost of our purchase. The cost grows at a constant rate, and this is why it is proportional