Evaluating Proportional Relationships

Write the equation for the table given. 

• y = 1/3x

• y = 3x

• y = 1/2x

Write an equation for this relationship.

• y=1/5x

• y=1/2x

• y=2x

• y=5x

Is the given table a proportional relationship? If so, write an equation that relates y to x.

• Yes;  y=1/3x

• Yes;  y=3x

• Yes;  y=5x 

• No

Determine the missing value in the table.

• 15

• 3

• 1/3

• 9

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

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

• proportional

• nonproportional

• constant of proportionality

• proportion

The table is​ ​ (a)   , because it ​ (b)   a constant ratio.

If so, what is the constant of proportionality?​ (c)  

• non-proportional

• proportional

• does not have

• has

• no constant

• k=14

Answer explanation

A proportional relationship means that two quantities maintain a constant ratio. In this case, the relationship does not exhibit a constant ratio, hence the answer is No.

When two ratios are equal they are .

(a)  

• Proportional

• Ratio

• Rate

• Unit Rate

Which situation represents a proportional relationship?

Select the correct answer ○ in each row.

What is the slope of a line that goes through the points (1,2) and (2,4)

• 1

• 2

• 3

• 4