Proportional Relationships- Formative 1

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 quantity is constant.

Front

What is the unit rate?

Back

The unit rate is the ratio of two measurements in which the second quantity is one unit. For example, if a car travels 60 miles in 1 hour, the unit rate is 60 miles per hour.

Front

Back

Front

What does it mean if a graph represents a proportional relationship?

Back

If a graph represents a proportional relationship, it will be a straight line that passes through the origin (0,0).

Front

How can you determine if a table of values shows a proportional relationship?

Back

A table of values shows a proportional relationship if the ratios of the corresponding values are constant.

Front

What is the cost per pound if 5 pounds of bananas cost $6.25?

Back

To find the cost per pound, divide the total cost by the number of pounds: $$\frac{6.25}{5} = 1.25$$. So, the cost per pound is $1.25.

Front

If Product #1 costs $10 for 4 pairs of socks and Product #2 costs $12 for 5 pairs, which has a lower cost per pair?

Back

Calculate the cost per pair: Product #1: $$\frac{10}{4} = 2.50$$ per pair; Product #2: $$\frac{12}{5} = 2.40$$ per pair. Product #2 has a lower cost per pair.

Front

What is the formula to find the constant of proportionality?

Back

Front

What does it mean if two quantities are not proportional?

Back

If two quantities are not proportional, it means that the ratio between them is not constant.

Front

How can you tell if a set of points on a graph is proportional?

Back

A set of points on a graph is proportional if they all lie on a straight line that passes through the origin.