Question

Bottles of water cost $2.00 each.

Is the relationship of the cost to the number of bottles of water a proportional relationship? Use a table or graph to prove it.
What is the cost of 12 bottles of water? Explain.
Write an equation to represent the relationship between x, number of bottles and y, the total cost.

Answer 1

Yes, it's proportional.

Cost of 12: $24.00

assume p is the price of the water bottle

xp= y

Explanation:

The price of the water bottles stay the same.

Cost of 1 bottle = $2

$2 x 12 = $24