Constant Proportionality on Tables, Equations, and Graphs

The graph shows the distance a plane travels. What does the point (2, 10) on the graph represent?

• The plane travels 2 miles in 10 minutes.

• The plane travels 10 miles in 1 minute.

• The plane travels 10 miles in 2 minutes.

• The plane does not travel at a constant rate.

The graph shows the distance a plane travels. Use one of the points on the graph to reduce to the unit rate.

• 5 miles per minute

• 5 minutes per mile

• 10 minutes per mile

• 10 miles per minute

Use the graph to determine an equation to represent the relationship. Use t for minutes (time), and m for miles.

• 5t = m

• 5m = t

Look at the graph, which ordered pair represents the unit rate?

• (0, 0)

• (1, 0.75)

• (4, 3)

• (8, 6)

Which graph would represent a proportional relationship?

• Graph A

• Graph B

• Graph C

• Graph D

The cost for 2 lbs of apples is $1.84. Reduce the ratio to determine the equation, where x is the lbs of apples and y is the cost.

• y = .92x

• x = .92y

• y = 2x

• y = 1.84x

Use a point on the graph to reduce to the unit rate.

• $7.50 per pound of chicken salad

• $1 per pound of chicken salad

• 7.5 pounds of chicken salad per dollar

• $15 for 2 pounds of chicken salad

Which equation would be use to create the graph above?

• y = 50x

• y = 2x

• y = 0.02x

Does the table represent a proportional relationship?

• Yes.

• No.

Does this graph represent a proportional relationship?

• Yes

• No