7th Grade Math Review: Proportionality

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 can you identify a proportional relationship in a table?

Back

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

Front

What does the constant of proportionality represent?

Back

The constant of proportionality is the constant factor that relates two proportional quantities, often represented as k in the equation y = kx.

Front

How do you calculate speed in miles per hour?

Back

Speed in miles per hour can be calculated by dividing the distance traveled in miles by the time taken in hours.

Front

What is the formula for finding the price of an item based on its weight?

Back

The price can be calculated using the formula p = r*n, where p is the price, r is the rate per unit, and n is the number of units.

Front

What is the unit rate?

Back

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

Front

How do you determine the best deal when comparing prices?

Back

To determine the best deal, calculate the price per unit for each option and compare them.

Front

What does a graph of a proportional relationship look like?

Back

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

Front

If y = 3x, what is the constant of proportionality?

Back

The constant of proportionality is 3.

Front

What is the relationship between the slope of a line and proportionality?

Back

In a proportional relationship, the slope of the line represents the constant of proportionality.