REVIEW: Candace purchased 6 gallons of gas for $13.56. What is the constant of proportionality that relates the cost in dollars, y, to the number of gallons, x?Remember, the constant of proportionality is k=yx .
The constant of proportionality can be found by dividing the cost, y, by the number of gallons, x. In this case, the cost is $13.56 and the number of gallons is 6.
k = y/x
k = 13.56/6
k ≈ 2.26
Therefore, the constant of proportionality that relates the cost in dollars, y, to the number of gallons, x, is approximately 2.26.