Ratios and Proportional Relationships

What is the constant of proportionality (in miles per hour) based on the table?

• 45

• 90

• 135

• 2

The constant of proportionality is 9/1. Interpret what that means in the context of this story.

• $9 per hour

• $9 for 3 hours

• 9 hours per $1

You spend $40 on 5 pounds of concrete. What is the unit rate in dollars per pound?

• $8 per pound

• $35 per pound

• $5 per pound

• $0.125 per pound

A unit rate is a rate in which the unit in the denominator is:

• 0

• 3

• 1

• 2

A parking lot has 3 cars and 12 trucks. Find the ratio of cars to trucks. Select all the true ratios.

• 3 trucks : 12 cars.

• 3 cars to 12 trucks

• 3 cars to 12 trucks

The constant of proportionality can be found by finding the __________  _____________.

• unit rate

• ratio rate

• proportion answer

• rational number

What makes a graph proportional?

• Straight Line

• The line goes through (0,0)

• Curvy line

• Straight line and passes through (0,0)

In the equation y = 14x, what is the constant of proportionality?

• y

• x

• 14

• y=14

What is the equation y=kx for the table?

• y=1/3x

• y=3x

• y=5x

• y=1/5x

Which equation matches the graph?

• y = 7x

• y = 42x

• y = 6x

• y = 2x