Proportional Relationships Review

Front

What is the constant of proportionality in the equation y = 14x?

Back

14

Front

Write the equation for the table given: If y = 3 when x = 1, y = 6 when x = 2, and y = 9 when x = 3.

Back

y = 3x

Front

Is the graph proportional if it does not pass through the origin?

Back

Non proportional

Front

Which equation represents a proportional relationship? y = x/2, y = 10 + x, y = 14 - x, y = 5x + 8

Back

y = x/2

Front

In a certain city, if Store A charges $3.15 for renting DVDs and Store B charges $3.20, which store has the least cost?

Back

Store A: $3.15

Front

What does it mean for two quantities to be proportional?

Back

Two quantities are proportional if they maintain a constant ratio.

Front

If y = kx, what does k represent?

Back

The constant of proportionality.

Front

How can you determine if a graph represents a proportional relationship?

Back

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

Front

What is the equation of a proportional relationship if the constant of proportionality is 5?

Back

y = 5x

Front

If the cost of 4 DVDs is $12, what is the constant of proportionality?

Back

3 (since $12/4 = $3 per DVD).