Ratios and Proportional Relationships

Ratios that are in proportion are also....

• reciprocals

• constraint

• bourgeoisie

• equivalent

You a graph represents a proportional relationship when the graph...

• is a curved line

• is a straight line

• passes through the origin

• is a straight line AND passes through the origin

Hailey has 8 pairs of shoes and 12 pairs of sneakers. Which is NOT an accurate way to describe the ratio of sneakers to shoes?

• 3 to 2

• 2:3

• 3:2

Eileen has 8 female friends and 2 male friends. Which is NOT an accurate way to describe the ratio of female friends to male friends?

• 8 to 2

• 4:1

Two quantities are in a ​ (a)   if the two quantities vary and have a constant ratio between them.

• proportional relationship

• proportional

• unit rate

• nonproportional

• constant of proportionality

An elevator moves at a constant rate of 18 feet in 3 seconds. A second elevator moves at a constant rate of 40 feet in 5 seconds.

The situation ​ ​ (a)   a proportional relationship because ​ (b)  

• does not represent

• the ratios are different

• represents

• the ratios are equivalent

Are the two ratios proportional?

• YES

• NO

Write how to find the proportion of

2:8 :: 25:625

(Do not give space first right the means than the extremes.)

Mathematical Equivalence

ON

When two ratios are equal they are .

(a)  

• Proportional

• Ratio

• Rate

• Unit Rate

The table shows the weight in pounds of objects on earth compared to objects on the moon.  If an object on earth weighs 42 lbs, what is its weight on the moon?

• 7 lbs

• 12 lbs

• 84 lbs

• 252 lbs