Constant of Proportionality Review

Is Asteroid x traveling faster or slower than Perseid 245? Explain how you know.

The constant of proportionality (k) in the table is:

The constant of proportionality (k) from the graph is:

The constant of proportionality (k) in the equation is:

     d = 23c  where d is the cost in dollars and c is the cubic yards

 A contractor must haul a large amount of dirt to a work site.  She collected information from three hauling companies.  EZ excavation gives its prices in a table.  Happy hauling gives its prices in a graph. Daryl’s dumping gives its prices in an equation. 

What does the constant (k) tell us about each company?

Complete the table on your study guide. Then write an equation to represent the relationship between the number of cars sold and bonus earned.

What is the unit price at each fruit stand?

 How much money would you save on 5 pounds of blueberries at the less expensive fruit stand?

8.   Water runs from a hose into a bucket at a steady rate. The amount of water in the bucket for the time it is being filled is shown in the graph.  The water is running at a rate of 5 gallons every 12 mins shown by the point indicated on the graph.

Label the axes appropriately. (Do this on your paper ~ type the title for the x & y-axis here)

Write the equation that represents the relationship between the gallons of water running into the bucket and the time.  Be sure to explain the meaning of each variable.