Lesson 14: Practice Problems
Problem 1
The equation
Write down at least four (gallons of gas, cost) pairs that fit this relationship.
Create a graph of the relationship.
What does 2.95 represent in this situation?
Jada’s mom remarks, “You can get about a third of a gallon of gas for a dollar.” Is she correct? How did she come up with that?
Problem 2
There is a proportional relationship between a volume measured in cups and the same volume measured in tablespoons. 3 cups is equivalent to 48 tablespoons, as shown in the graph.
Plot and label at least two more points that represent the relationship.
Use a straightedge to draw a line that represents this proportional relationship.
For which value y is (
) on the line you just drew? What is the constant of proportionality for this relationship?
Write an equation representing this relationship. Use
for cups and for tablespoons.