The cost y (in dollars) to rent a kayak is proportional to the number x of hours that you rent the kayak. It costs $27 to rent the kayak for 3 hours.

Answer 1

I assume that you need an equation that represents this proportional relationship. Proportional relationships are represented with an equation in the form of y = k •x where k is the unit rate or the constant of proportionality, k.

For this problem, since it costs $27 for 3 hours, the constant , k, is $9 for 1 hour.

The equation will be y = 9•x , where y is the cost in dollars and x is the number of hours the kayak is rented.