Proportional Relationships Flashcard- Math 7

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 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 constant of proportionality?

Back

The constant of proportionality (k) is the constant ratio between two proportional quantities.

Front

If y = kx, what does k represent?

Back

In the equation y = kx, k represents the constant of proportionality.

Front

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

Back

To find the constant of proportionality from a table, divide the value of y by the value of x for any pair of corresponding values.

Front

What is the unit rate?

Back

The unit rate is the ratio of two measurements in which the second quantity is one unit.

Front

How can you determine the missing value in a proportional table?

Back

To determine the missing value in a proportional table, use the constant of proportionality to set up a proportion.

Front

What is the equation of a line in a proportional relationship?

Back

The equation of a line in a proportional relationship can be expressed as y = kx, where k is the constant of proportionality.

Front

If a train travels 90 miles in 1 hour, what is its unit rate of speed?

Back

The unit rate of speed for the train is 90 miles per hour.

Front

What does it mean if a relationship is non-proportional?

Back

A non-proportional relationship means that the ratio between the two quantities is not constant.