What is the constant of proportionality in the equation y=18x?

1. There is a proportional relationship between the time Katie spends babysitting, x, and the amount of money she earns babysitting, y.  Based on the information on the graph, how much money will she make after babysitting for 8 hours?  

Jonathan bikes 11.2 miles in 1.4 hours at a steady rate.  Write an equation that represents the proportional relationship between the x hours he bikes and the distance y Jonathan travels

Water is dripping steadily from a faucet into a bowl.  What is the constant of proportionality for the relationship between the number of millimeters of water in the bowl and the time?  What is the equation?

1. A package of 5 pairs of socks costs $29.45.  What is the cost of a single pair of socks? 

If a dog eats 22.5 ounces of food in 2 days, how many ounces of food does the dog eat in 9 days?

A box of cereal states that there are 90 calories in a ¾ cup serving.  How many calories are there in 4 cups of the cereal?

Beth walks 1 ¾ miles in ⅗ an hour.  Linda walks ⅞ miles in ¾ an hour.  Who has a faster miles per hour?

Is the relationship between the number of slices of salami in a sandwich and the number of calories proportional?

1. Constant of proportionality is the same thing as ____________. 

A proportional relationship on a graph must be the following:

There is a proportional relationship between the number of tokens Brenda uses, x, and the number of pitches thrown by the pitching machine, y.  Find the equation that represents this relationship. 

How do we solve for k?

Dillon and Samantha work at two different grocery stores. Dillon made $41.50 for working 5 hours and Samantha made $50.40 for 6 hours. Who makes more money per hour?

A chef turned on a faucet and filled a 2-gallon pot in 5/6

of a minute. What is the rate of water flow?

____ gallons per minute