Proportional Relationships Review

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

How do you determine if a table of values represents a proportional relationship?

Back

A table represents a proportional relationship if the ratios of corresponding values are equivalent.

Front

What is the formula to find the unit rate?

Back

The unit rate can be found by dividing the total amount by the number of units, expressed as: Unit Rate = Total Amount / Number of Units.

Front

If Samantha earned $90 for 6 hours of work, how do you calculate her hourly wage?

Back

To calculate her hourly wage, divide the total earnings by the total hours worked: $90 / 6 hours = $15 per hour.

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing the relative size of one quantity to another.

Front

How can you express a ratio in different forms?

Back

A ratio can be expressed as a fraction, with a colon (e.g., 3:5), or in words (e.g., '3 to 5').

Front

What is the relationship between ratios and proportions?

Back

Ratios compare two quantities, while proportions state that two ratios are equal.

Front

If 16 hot dogs are sold each minute, how many hot dogs are sold in 30 minutes?

Back

To find the total, multiply the rate by the time: 16 hot dogs/minute * 30 minutes = 480 hot dogs.

Front

In a group of 3 boys for every 5 girls, how do you find the number of boys if there are 70 girls?

Back

Set up a proportion: 3 boys/5 girls = x boys/70 girls. Cross-multiply and solve for x: x = (3/5) * 70 = 42 boys.

Front

What is the constant of proportionality?

Back

The constant of proportionality is the constant ratio or rate in a proportional relationship.