8th Grade/Proportional Relationships

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 the unit rate?

Back

The unit rate is the ratio of two measurements in which the second quantity is one unit. For example, if a car travels 60 miles in 1 hour, the unit rate is 60 miles/hour.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you identify a proportional relationship from a table?

Back

A table represents a proportional relationship if the ratios of the corresponding values are constant.

Tags

CCSS.7.RP.A.2A

Front

What is slope-intercept form?

Back

Slope-intercept form is a way of writing the equation of a line as y = mx + b, where m is the slope and b is the y-intercept.

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Front

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

Back

The slope represents the rate of change between the two quantities in a proportional relationship.

Tags

CCSS.8.EE.B.5

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 (0,0).

Tags

CCSS.7.RP.A.2D

Front

What is the difference between proportional and non-proportional relationships?

Back

Proportional relationships have a constant ratio, while non-proportional relationships do not maintain a constant ratio.

Tags

CCSS.7.RP.A.2D

Front

Write an equation for a proportional relationship with a unit rate of 18.50.

Back

y = 18.50x.

Tags

CCSS.7.RP.A.2C

Front

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

Back

It means that the ratio between the two quantities is not constant.

Tags

CCSS.7.RP.A.2D

Front

How do you find the unit rate from a proportional relationship?

Back

To find the unit rate, divide the total quantity by the number of units.

Tags

CCSS.7.RP.A.2B