Rates and Proportionality Test Practice

REVIEW QUESTION
Which best describes the information represented in this table?
Beats      30      40       80
Minutes    1        2         3

•  proportional
• non-proportional

In the equation y = 9x, what is the constant of proportionality?

• y
• x
• 9
• not enough information

What is the formula for a proportional relationship?

• y=kx
• y=k/x
• z=ykx
• y=ky

Tags

CCSS.7.RP.A.2C

How can you find the constant of proportionality?

• k = y/x
• k = x/y
• E=mc²
• y = kx

Tags

CCSS.7.RP.A.2B

Time            1 hr     2 hr    3 hr
Distance       50      100    150
What can we say about this relationship between distance and time

• It is proportional, because the change is constant
• It isn't proportional because the change is constant
• The constant is 50
• It isn't proportional because there is no constant

Time               1 day   2 days   3 days
Cash earned      $15    $30         $45
What is the constant (k) ?

• 15
• 60
• 90
• 30

Find the rate of change.

• 4 burgers per person
• 6 burgers per person
• 2 burgers per person
• 2 people per burger

Tags

CCSS.8.F.B.4

CCSS.HSF.IF.B.6

What equation represents the relationship?

• y = 2x
• k = 2x
• 2 burgers per person
  x = 2y
• k = 2

It costs $5 to buy 2 pounds of fish tank gravel. What is the unit rate in dollars per pound?

• 5/2 dollars/lb
• 2/5 dollars/lb
• 3 dollars/lb
• 1/3 dollars/lb

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Abby can read 1/2 a book in 3/4 of an hour. What is the unit rate in books per hour?

• 2/3 or 0.66666.. books per hour
• 3/2 or 1.5 books per hour
• 3/8  or o.375 books per hour
• 1/3 or 0.3333... books per hour

Tags

CCSS.7.RP.A.1