4.1.2 Reflection & Practice (Pages 84-86)

Front

What is the growth rate of an oak tree that grows 10 feet in 4 years?

Back

2.5 feet per year

Front

Where is the unit rate for a plant shown on a growth graph?

Back

At the y-coordinate for each line when the x-coordinate is 1.

Front

How do you find the difference in height between two plants after a certain time?

Back

Calculate the unit rate for each plant and subtract the values.

Front

What is a proportional relationship?

Back

A relationship where two quantities maintain a constant ratio.

Front

If TJ uses a ratio of 5 lemons to 1 cup of sugar, is the relationship proportional?

Back

No, the relationship is not proportional if the quantities do not maintain a constant ratio.

Front

How do you calculate the unit rate?

Back

Divide the total quantity by the number of units.

Front

What does it mean for a relationship to be proportional?

Back

It means that as one quantity changes, the other quantity changes at a constant rate.

Front

If Plant A grows at a rate of 2 inches per week and Plant C at 1 inch per week, what is the height difference after 15 weeks?

Back

15 inches.

Front

What is the formula for finding the unit rate?

Back

Unit Rate = Total Quantity / Number of Units.

Front

How can you tell if a table of values represents a proportional relationship?

Back

If the ratio of the two quantities is constant across all pairs.