Proportional vs. 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?  

• 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.

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.

Which best describes the table?

• proportional
• non-proportional

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

• Proportional
• Not Proportional

Proportional or Non-Proportional:
The video game rental fee is $15 plus $3 per day. 

• Proportional
• Non-Proportional

Shawn makes $7.50 an hour to babysit for her next door neighbors.  Describe the graph of this relationship.

• Proportional
• Non-proportional

What 2 things are required for a graph to be proportional?

• Must go through origin and can be a straight or curved line

• Must be a straight line but can go through any point

• Must be a straight line and go through the origin

• Does not have be a straight line and can go through any point

Is this graph proportional?

• Yes because it is a straight line and goes through the origin

• No because it is not a straight line but goes through the origin

• No because it is not a straight line and does not go through the origin

• No because it is a straight line but does not go through the origin