Proportional and Non-Proportional

Which best describes the equation?
y = 75x

• Proportional
• Nonproportional

Which best describes this equation?
y= 3.75x + 2

• Proportional 
• Non-proportional

Does this graph represent a proportional relationship?

• Yes, because the line is pretty.
• No, because the line goes through the origin.
• Yes because the line goes through the origin.
• No, because the graph is non-proportional.

The graph shows the water level as a bathtub fills.  Select the correct choice that describes this graph.

• The graph is linear and proportional.
• The graph is linear and non-proportional.

Which best describes the table?

• proportional
• non-proportional

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

• 45
• 90
• 135
• 2

Is the graph proportional or nonproportional?

• proportional
• non proportional

• Proportional, the rate of change is 5/3
• Non Proportional
• Proportional, the rate of change is 3/5
• Proportional, you add 2

Does this graph represent a proportional relationship?  

• No, because it doesn't pass through the origin.
• Yes, because it doesn't pass through the origin.
• Yes, because it intersects the y axis.
• No, because it intersects the x axis.

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

• Proportional
• Not Proportional