Representations of Proportional and Non Proportional Relationships

Which graph is proportional?

• 
• 
• 
• 

Why does this graph show a non-proportional relationship?

• Because it is proportional

• It goes through the origin

• It does not go through the origin

• It is a straight line

Which relationship is an example of a proportional function?

• a rental company charges $80 per day and a one-time fee of $24

• a taxi ride costs $2 for the first mile and $4 for each additional mile

• a gym membership cost $30 per month and an additional annual registration fee of $75

• Beverly earns $210 a week for 4 weeks

Does this table represent a proportional relationship?

• Yes

• No

What is the slope of the table?

• 15

• 6

• 1/6

• -6

Bob has $150 in his savings account and saves $40 per month.  Which equation represents the amount Bob has in his account after x months?

• y = 150 + 40

• y = 40x + 150

• y = 150x + 40

Proportional or Non-Proportional?

• Proportional

• Non-Proportional

Which of the statements about the graph below is true?

• The graph is proportional and has an equation of y = -x +18.

• The graph is non-proportional and has an equation of y = -x + 18.

• The graph is non-proportional and has an equation of y = -2x + 18.

• None of the above statements are true.

The table below shows the amount that a catering company charges based on the number of people at an event. Which of the following equations shows the relationship between c, the amount the company charges based on p, the number of people at the event?

• c = 16p

• c = 75p + 13

• p = 13c + 75

• c + 13p + 75

• y = 1/5x

• y = 5x

• y = 1/2x