Constant of Proportionality Review

Front

What is the constant of proportionality?

Back

The constant of proportionality is a constant ratio between two quantities that are proportional to each other. It is often represented by 'k'.

Tags

CCSS.7.RP.A.2B

Front

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

Back

k = 8

Tags

CCSS.7.RP.A.2B

Front

In a proportional relationship, if x = 5 and y = 20, what is the constant of proportionality?

Back

k = 4 (since 20/5 = 4)

Tags

CCSS.7.RP.A.2B

Front

What does it mean if two quantities are proportional?

Back

Two quantities are proportional if they maintain a constant ratio or relationship to each other.

Tags

CCSS.7.RP.A.2A

Front

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

Back

Divide the value of y by the corresponding value of x for any pair of values in the table.

Tags

CCSS.7.RP.A.2B

Front

If the constant of proportionality is 1/4, what is the equation of the line?

Back

y = (1/4)x

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Front

What is the relationship between the constant of proportionality and slope in a graph?

Back

In a graph, the constant of proportionality represents the slope of the line.

Tags

CCSS.8.EE.B.5

Front

If y = 3x, what is the value of y when x = 4?

Back

y = 12 (since 3 * 4 = 12)

Tags

CCSS.7.RP.A.3

Front

What is the constant of proportionality if y = 10 when x = 2?

Back

k = 5 (since 10/2 = 5)

Tags

CCSS.7.RP.A.2B

Front

If a recipe calls for 2 cups of flour for every 3 cups of sugar, what is the constant of proportionality for flour to sugar?

Back

k = 2/3 (flour to sugar ratio)

Tags

CCSS.7.RP.A.2B