1.5 Graph Proportional Relationships

Front

What makes a graph proportional?

Back

A graph is proportional if it is linear and the line goes through the origin.

Front

What is a unit rate?

Back

A unit rate is a ratio that compares a quantity to one unit of another quantity.

Front

How can you identify a proportional relationship in a graph?

Back

A proportional relationship can be identified if the graph is a straight line that passes through the origin.

Front

What does it mean if a graph does not pass through the origin?

Back

If a graph does not pass through the origin, it represents a non-proportional relationship.

Front

What is the unit rate for a graph that shows 100 words in 2 minutes?

Back

The unit rate is 50 words per minute.

Front

Which type of line represents a proportional relationship?

Back

A straight line.

Front

What is the significance of the slope in a proportional graph?

Back

The slope represents the unit rate of the relationship.

Front

If Taylor can write 25 words per minute, how many words can he write in 3 minutes?

Back

75 words.

Front

What does a curvy line on a graph indicate?

Back

A curvy line indicates a non-linear relationship, which is not proportional.

Front

How do you determine if a graph is proportional by looking at its coordinates?

Back

If the ratio of the y-coordinate to the x-coordinate is constant, the graph is proportional.