Proportional vs. Nonproportional

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.

Tags

CCSS.7.RP.A.2A

Front

What is a non-proportional relationship?

Back

A non-proportional relationship is a relationship where the ratio of one quantity to another is not constant.

Tags

CCSS.7.RP.A.2D

Front

What does it mean if a graph goes through the origin?

Back

If a graph goes through the origin (0,0), it indicates a proportional relationship.

Tags

CCSS.7.RP.A.2D

Front

What is the constant of proportionality?

Back

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

Tags

CCSS.7.RP.A.2B

Front

How do you find the slope of a line?

Back

The slope of a line is found by dividing the change in the y-values by the change in the x-values (rise/run).

Tags

CCSS.8.EE.B.5

Front

What is the slope of the line represented by the equation y = -6x?

Back

The slope of the line is -6.

Tags

CCSS.8.EE.B.5

Front

Which of the following represents a proportional relationship: y = 2x or y = x + 3?

Back

y = 2x represents a proportional relationship.

Tags

CCSS.7.RP.A.2D

Front

What is the equation of a proportional relationship?

Back

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

Tags

CCSS.7.RP.A.2C

Front

If the constant of proportionality is 16, what is the value of y when x = 2?

Back

y = 16 * 2 = 32.

Tags

CCSS.7.RP.A.2B

Front

What does a horizontal line on a graph indicate about the relationship?

Back

A horizontal line indicates a non-proportional relationship, as the y-value does not change with x.

Tags

CCSS.7.RP.A.2D