Proportional Functions

Ryan mows lawns each summer in order to have spending money during the school year. He charges the same amount per hour. One summer day, Ryan worked 7 hours and was paid $80.50. Does this situation represent a proportional or non proportional situation?

• Proportional

• Non proportional

• John's earnings

• Jackie's earnings

Does the table represent a proportional or non proportional situation?

• Proportional

• Non proportional

Which equation represents a proportional situation?

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Which graph shows a proportional situation?

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Is this table proportional or non-proportional?

• Proportional because the y to x ratio is a constant of proportionality. 

• Non-Proportional because the y to x ratio is not a constant of proportionality. 

• Proportional because the x to y ratio is a constant of proportionality. 

• Non-Proportional because the x to y ratio is not a constant of proportionality. 

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

• Proportional

• Not Proportional

What are the main characteristics of a proportional relationship between two variables?

• They pass through the origin.

• They are linear (straight line) and also pass through the origin.

• They are curved

• The x to y ratio is a constant of proportionality.

Is the following equation a proportional relationship?
y = x

• No

• Yes

Why does this graph show a non-proportional relationship?

• It doesn't, it is proportional because it is a straight line

• It goes through the origin

• It does not go through the origin

• It is a straight line