Constant of Proportionality

Front

What is the constant of proportionality?

Back

The constant of proportionality is the ratio between two proportional quantities, often represented as 'k' in the equation y = kx.

Front

Write an equation that represents the relationship between weight (x) and cost (y) if the cost is 4 times the weight.

Back

y = 4x

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together. It expresses how many units of one quantity correspond to one unit of another quantity.

Front

If a box of cereal costs $3.59 for 30 oz, what is the unit rate per ounce?

Back

12 cents per ounce.

Front

How do you find the constant of proportionality from a table of values?

Back

Divide the value of y by the value of x for any pair of corresponding values. If the ratio is constant, that value is the constant of proportionality.

Front

What does it mean if two quantities are proportional?

Back

Two quantities are proportional if they maintain a constant ratio or relationship to each other.

Front

Identify the constant of proportionality if y = 5x.

Back

k = 5

Front

What is the unit rate if Brian typed 30 words in 1 minute?

Back

30 words per minute.

Front

If the cost of 10 apples is $5, what is the cost per apple?

Back

$0.50 per apple.

Front

What is the formula to calculate the constant of proportionality?

Back

k = y/x, where y is the dependent variable and x is the independent variable.