Proportional Graphs

Front

What is a proportional relationship?

Back

A proportional relationship is a relationship between two quantities where the ratio of one quantity to the other is constant.

Front

How can you identify a proportional graph?

Back

A proportional graph is a straight line that passes through the origin (0,0).

Front

What does it mean if a table does not represent a proportional relationship?

Back

It means that the ratio of the quantities does not remain constant.

Front

What is the formula to determine if a relationship is proportional using a table?

Back

Divide y by x; if the result is constant for all pairs, the relationship is proportional.

Front

What is the significance of the origin in proportional graphs?

Back

The origin (0,0) indicates that when one quantity is zero, the other quantity is also zero, which is a characteristic of proportional relationships.

Front

If a graph is non-proportional, what does that imply about its slope?

Back

A non-proportional graph may have a slope that does not remain constant or does not pass through the origin.

Front

What is the cost of 1 pound of grapes if the graph shows a cost of $1.50 for 1 pound?

Back

$1.50

Front

Which of the following tables shows a proportional relationship: A, B, C, D?

Back

A

Front

What is the relationship between the x and y values in a proportional relationship?

Back

The y value is a constant multiple of the x value.

Front

What does it mean if a graph is described as 'non-proportional'?

Back

It means that the relationship between the variables does not maintain a constant ratio.