Proportional Relationships Quiz

During one hour of running, Jeff can run 5.5 miles. The number of miles Jeff runs and the number of hours are in a proportional relationship. This is represented by y = 5.5x. Part B: Interpret the slope of the graph.

Bradley is tiling his kitchen. He wants to buy tile at the cheapest price. The local hardware store sells tile for $5.27 per square foot of tile. The cost at the mega hardware store is shown in the graph. There is a proportional relationship between the number of tiles bought and the cost of the tiles. What is the cheapest price Bradley will pay for 100 square feet of tile?

The graph shows the cost of grapes at a grocery store. What is the slope of the line?

• 11/2

• 2/2

• 2/3

• 11

Find the slope of the line that passes through A(0, -5) and B(3, 4).

Describe the slope by writing zero, positive, negative, or undefined next to each graph.

Describe the slope by writing zero, positive, negative, or undefined next to each graph.

Describe the slope by writing zero, positive, negative, or undefined next to each graph.

Describe the slope by writing zero, positive, negative, or undefined next to each graph.

A space program is testing a series of new models to decide which one to use for the upcoming Mars Mission. The information about the power consumption (p) in kW of electricity in terms of time (t) in hours of each rocket is shown below. Rocket A: Power consumption is modeled by the equation p = 1.4t. Rocket B: Power consumption is modeled in the following table. t: 2, 4, 6, 8, 10 P: 3, 6, 9, 12, 15 Part A: Which rocket would use less power if the trip only takes 5 hours? How do you know?

Part B: What would the power consumption (p) be for the rocket that uses less power?