Constant of Proportionality - 7th Grade

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 the equation for a proportional relationship where the constant of proportionality is 18.50.

Back

y = 18.50x

Front

How do you find the unit rate from a total cost and quantity?

Back

Divide the total cost by the quantity to find the cost per unit.

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

What is the form of a proportional relationship equation?

Back

y = kx

Front

If y = 45 when x = 1, what is the constant of proportionality?

Back

45

Front

How can you determine if two quantities are proportional?

Back

If the ratio of the two quantities is constant, they are proportional.

Front

What does it mean if a graph passes through the origin?

Back

It indicates a proportional relationship between the two variables.

Front

If the constant of proportionality is 90, what is the equation when x = 1?

Back

y = 90x

Front

What is the missing value if y = 15 when x = 1?

Back

15