Representing Proportional Relationships Ratios

Which graph is proportional?

• A

• B

• C and D

• All of the graphs are proportional

Does this graph represent a proportional relationship?

• Yes, because the line is pretty.

• No, because the line goes through the origin.

• Yes because the line goes through the origin.

• No, because the graph is non-proportional.

Is this table proportional?

• Yes

• No

Does this table represent a proportional relationship?

• Yes

• No

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

The amount of eggs and the cups of cream needed to make egg nog have a proportional relationship. Complete the table.

• 5/1 & 5/1

• 10/2 & 25/5

• 1/5 & 1/5

• 2/10 & 5/25

Two quantities are ​ (a)   if the ratios comparing them are equivalent.

• proportional

• nonproportional

• constant of proportionality

• proportion

When two ratios are equal they are .

(a)  

• Proportional

• Ratio

• Rate

• Unit Rate

Proportional relationships have a constant ratio, contant of proportionality, or unit rate

• True

• False

The points (0,0) and (1,k), where  k is the unit rate, will always appear on the line representing two quantities that are proportional to each other. 

• True

• False