Math 7: Topic 2 Review

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 determine if a relationship is proportional using a graph?

Back

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

Front

What is the equation for a proportional relationship?

Back

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

Front

If a machine packages 60 boxes in 1 minute, how many boxes does it package in 4 minutes?

Back

240 boxes.

Front

What does the slope of a line represent in a proportional relationship?

Back

The slope represents the constant of proportionality, which indicates how much one quantity changes in relation to another.

Front

Write the equation for the total cost y in dollars for x sheets of stickers if each sheet costs $2.45.

Back

y = 2.45x.

Front

What is a non-proportional relationship?

Back

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

Front

How can you tell if a graph represents a non-proportional relationship?

Back

A graph represents a non-proportional relationship if it does not pass through the origin or is not a straight line.

Front

Solve the proportion: 3/4 = x/12. What is x?

Back

x = 9.

Front

What is the constant of proportionality in the equation y = 22x?

Back

The constant of proportionality is 22.