Graphing Proportional Relationships

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

What does it mean if a graph passes through the origin (0,0)?

Back

If a graph passes through the origin, it indicates that the relationship between the two quantities is proportional.

Front

How can you identify a proportional graph?

Back

A proportional graph is a straight line that passes through the origin.

Front

What is the unit rate?

Back

The unit rate is the ratio of two measurements in which the second quantity is one unit.

Front

How do you calculate the unit rate from a given quantity?

Back

To calculate the unit rate, divide the first quantity by the second quantity.

Front

What is a constant rate of change?

Back

A constant rate of change means that the change in one quantity is consistent for every unit change in another quantity.

Front

What does a non-proportional graph look like?

Back

A non-proportional graph does not pass through the origin and may not be a straight line.

Front

If Taylor can type 25 words per minute, how many words can she type in 10 minutes?

Back

250 words (25 words/minute * 10 minutes).

Front

What is the slope of a proportional relationship graph?

Back

The slope represents the constant rate of change and is equal to the unit rate.

Front

What is the significance of the y-intercept in a graph?

Back

The y-intercept indicates the value of the dependent variable when the independent variable is zero.