8th Grade-Lesson 8 Quiz

What is the constant of proportionality?

• 3
• 4
• 2
• 5

Tags

CCSS.7.RP.A.2B

What is the constant of proportionality for this table?

• $1/9 per hour
• $9 per hour
• $8 per hour

Tags

CCSS.7.RP.A.2B

If Justin can type 408 words in 4 minutes, how many words can he type per minute?

• 102 words per minute
• 100 words per minute
• 400 words per minute
• 412 words per minute

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

What was Brian's unit rate?

• 3/2 word per minute
• 30 minutes per word
• 60 minutes per word
• 30 words per minute

Tags

CCSS.7.RP.A.2D

Identify the constant of proportionality.

• k = 2x

• k = 2

• k = 4

• none (not proportional)

Tags

CCSS.7.RP.A.2B

Identify the constant of proportionality.

• k = 6

• k = 12

• k = 1/6

• k = 1/12

• none (not proportional)

Tags

CCSS.7.RP.A.2B

Identify the constant of proportionality.

• k = 5

• k = 1/5

• k = 1

• k = 2.5

• none (not proportional)

Tags

CCSS.7.RP.A.2B

The constant of proportionality of this graph is k = 45. What does it mean?

• The boat travels for 45 miles for every 45 hours

• The boat travels 1 mile for every 45 hours

• The boat travels 45 miles for every 1 hour

• The boat travels 1/45 mile for every 1 hour

Tags

CCSS.7.RP.A.2D

Write an equation that represents the relationship between the weight(x) and the cost(y).

• y = 1/2 x

• y = 1/4 x

• y = 2x

• y = 4x

Tags

CCSS.8.EE.B.5

In a proportional relationship, the ratios...

• are all equal

• are not equal

Tags

CCSS.6.RP.A.3A