Unit 3 Review - Smith

Front

What is the equation for a proportional relationship in the form y=kx?

Back

The equation for a proportional relationship is y=kx, where k is the constant of proportionality.

Front

How do you determine the better buy between two products?

Back

To determine the better buy, calculate the unit price for each product and compare them. The product with the lower unit price is the better buy.

Front

What is a non-proportional relationship?

Back

A non-proportional relationship is one where the ratio between two quantities is not constant.

Front

If hair grows at a rate of 2.5 cm every 2 months, how long will it take to grow 22.5 cm?

Back

It will take 18 months to grow 22.5 cm of hair.

Front

How do you scale a recipe for a different number of servings?

Back

To scale a recipe, use the ratio of the desired servings to the original servings and multiply the ingredient amounts accordingly.

Front

What is the constant of proportionality in the equation y=8x?

Back

The constant of proportionality is 8.

Front

What is the unit price of an 8 pack of juice boxes that costs $4.79?

Back

The unit price is $0.59875 per juice box.

Front

What is the unit price of a 12 pack of juice boxes that costs $6.59?

Back

The unit price is $0.5491667 per juice box.

Front

How do you identify a proportional graph?

Back

A proportional graph is a straight line that passes through the origin (0,0).

Front

What is the formula to calculate the total cost based on unit price and quantity?

Back

Total cost = Unit price × Quantity.