Unit 4, Proportional Relationships and Percentages -Slim version

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

How do you calculate speed?

Back

Speed is calculated using the formula: Speed = Distance / Time.

Front

What is the constant of proportionality?

Back

The constant of proportionality is the ratio of one quantity to another in a proportional relationship, often represented as k in the equation y = kx.

Front

How do you find the percentage decrease?

Back

Percentage decrease is calculated using the formula: Percentage Decrease = ((Original Amount - New Amount) / Original Amount) * 100.

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together, expressed as a quantity per one unit of another quantity.

Front

If a car travels 1/3 mile in 1/20 hour, what is its speed?

Back

The speed is 6.7 miles per hour.

Front

What does a 20% decrease mean?

Back

A 20% decrease means that the new amount is 20% less than the original amount.

Front

How do you convert a fraction to a percentage?

Back

To convert a fraction to a percentage, divide the numerator by the denominator and then multiply by 100.

Front

What is the formula for finding the new amount after a percentage decrease?

Back

New Amount = Original Amount - (Percentage Decrease * Original Amount).

Front

How do you find the cost per pound if 3 pounds of apples cost $3.60?

Back

To find the cost per pound, divide the total cost by the number of pounds: $3.60 / 3 = $1.20 per pound.