Unit 3: Flashcard # 1 Review - Proportional Relationships

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

What is the constant of proportionality in the equation y = kx?

Back

The constant of proportionality (k) is the number that relates the two variables in a proportional relationship.

Front

How do you identify a proportional relationship from a graph?

Back

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

Front

What is the ratio of 4 red apples to 3 green apples?

Back

The ratio is 4:3.

Front

If y = 8x, what is the constant of proportionality?

Back

The constant of proportionality is 8.

Front

What does the equation y = kx represent?

Back

It represents a linear relationship where y is directly proportional to x.

Front

How can you tell if two ratios are equivalent?

Back

Two ratios are equivalent if their cross products are equal.

Front

What is the formula to find the constant of proportionality?

Back

The constant of proportionality can be found using the formula k = y/x.

Front

If a table shows values of x and y, how do you find the equation of the proportional relationship?

Back

You can find the equation by determining the constant of proportionality (k) and writing it in the form y = kx.

Front

What is an example of a proportional relationship in real life?

Back

An example is the relationship between distance and time when traveling at a constant speed.