Proportional vs Non Proportional Tables, Graphs, and Equations

Newtown middle school spends 11 dollars on every yearbook it buys. Is the amount of money NMS spends on yearbooks proportional to the total number of yearbooks NMS buys?

• Yes

• No

Which statement cannot be true of the graph of a proportional relationship?

• It is not linear (straight)

• It is linear

• It includes the origin

• It shows a constant rate of change

Which shows a proportional relationship?

• y = 1/2x - 1/2

• y = 1/2x

• y = 2x - 2

• y = 2x + 2

What is the definition of a proportional relationship?

• A proportional relationship is when two quantities are equal.

• A proportional relationship is when one quantity increases while the other decreases.

• A proportional relationship is a relationship where two quantities maintain a constant ratio.

• A proportional relationship is a relationship that varies with time.

What should a proportional graph look like?

• A proportional graph should visually represent data where the size of elements corresponds to their values.

• A proportional graph must have equal-sized elements regardless of value.

• A proportional graph is a line graph that does not represent data accurately.

• A proportional graph should only use bar charts.

What is a non-proportional relationship?

• non proportional relationship is one where the ratio between two variables is not constant.

• non proportional relationship has a constant ratio between two variables.

• non proportional relationship means one variable does not affect the other.

• non proportional relationship is always linear.

What is the rate of change?

• $3

• $4

• $2

• $9

Does the table represent a proportional relationship?

• Yes.

• No.

The number of trees and the number of apples are given in the table above.  Determine which statement below is correct.

• The table is not proportional because the unit rate is not constant.

• The table is proportional and the unit rate is 1/13

• The table is proportional and the unit rate is 13.

• The table is not proportional because it doesn't pass through the origin.

Select all graphs that represent proportional relationships.

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