Proportional Relationships Quiz

Which statement best describes the relationship between x and y in the table?

• Proportional
• Not Proportional

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

• 45
• 90
• 135
• 2

Find the unit rate:  $3.60 for 3 pounds of apples. How much does it cost for 1 pound of apples?

• $1.00 per pound
• $3.60 per pound
• $1.20 per pound
• $1.10 per pound

Does the table represent a proportional relationship?

• Yes.
• No.

Which color car represents a proportional relationship?

• Red car
• White car
• Both cars
• None of the cars

The constant of proportionality can be written as an equation in the form

____ = _____ _____

• k = y/x

• y = k-x

• k = y+x

• What's k again?

Is This a Proportional Relationship?

• Yes. The graph has a straight line and goes through the origin.

• No. The Graph has a straight line and goes through the origin.

• Yes. The graph has a straight line but doesn't go through the origin.

• No. The graph has a straight line but doesn't go through the origin.

Is this Proportional?

• Yes. the graph has a straight line and goes through the origin.

• No. the graph has a straight line and goes through the origin.

• Yes. The graph is not a straight line and doesn't go through theorigin.

• No. The graph is not a straight line and doesn't go through the origin.

Proportional or Nonproportional

• Proportional

• Nonproportional

• Both

• Neither

How can we tell if a graph is proportional?

• It has a straight line and doesn't go through the origin.

• It goes through the origin but has a curvy line.

• It has a curvy line and doesn't go through the origin.

• It has a straight line and goes through the origin.