Test on Proportional Relationship

What is the value of x?

• 24

• 5.4

• 2.4

• 3.6

An architect built a scale model of a sports stadium using a scale in which 2 inches represents 40 feet. The height of the stadium is 160 feet. What is the height of the scale model in inches?

• 2 inches

• 4 inches

• 24 inches

• 8 inches

Does the table represent a proportional relationship?

• Yes.

• No.

Which situation represents a proportional relationship?

Select the correct answer ○ in each row.

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

A restaurant orders corn tortillas and flour tortillas. The ratio of the number of corn tortillas to the number of flour tortillas is 2 : 3. What is the ratio of the number of flour tortillas to the total number of tortillas?

• 3 : 8

• 3 : 5

• 2 : 8

• 2 : 5

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.

What is the constant of proportionality?

• $3

• $4

• $2

• $9

Is this graph proportional?

• Yes

• No

The number of trees and the number of apples are given in the table above.  Determine which statement below is correct.

• The table is not proportional because the unit rate is not constant.

• The table is proportional and the unit rate is 1/13

• The table is proportional and the unit rate is 13.

• The table is not proportional because it doesn't pass through the origin.