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
.
To find the constant of proportionality, we need to divide the cost in dollars by the number of gallons.
$13.56 / 6 gallons = $2.26/gallon
Therefore, the constant of proportionality is $2.26.