COP word problems

In the equations y = kx and k = y/x, what does the letter "k" represent?

• independent value
• dependent value
• constant of proportionality

Tags

CCSS.7.RP.A.2B

Janet used 155 beads to create 5 necklaces.  What is the constant of proportionality?  (How many beads did she use to make each necklace?)

• 31
• 51
• 33
• 30

Tags

CCSS.7.RP.A.2B

What is the constant of proportionality?

• 4
• 6
• 12
• 18

Tags

CCSS.7.RP.A.2B

Write the equation for the table given

• y = 1/3x
• y = 3x
• y = 1/2x

Write an equation for this relationship.

• y = 18x
• y = 18.50x
• y = 22.50x
• y = 22x

Craig earns extra money as a lifeguard. He earns $37 for 4 hours and $64.75 for 7 hours.  What is the constant of proportionality? 

• $37 per hour
• $64.75 per hour
• $9.25 per hour
• $18.50 per hour

What is the constant of proportionality (in miles per hour) based on the table?

• 45 mph
• 90 mph
• 135 mph
• 2 mph

If an equation takes the form y (minutes) = 3x (cookies eaten), how long will it take you to eat 6 cookies?

• 18 minutes
• 2 minutes
• 6 minutes
• 1/2 minute

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.6

CCSS.6.EE.B.7

CCSS.6.EE.C.9

Krogers is sellling apples, 10 for $2.50. How much is one apple?

• y=2.5x
• y=10x
• y=0.25x
• y=0.4x

Tags

CCSS.7.RP.A.2C

Write an equation for this situation.

• y=9.75x
• y=19x
• y=19.25x
• y=9.5x

Tags

CCSS.5.OA.B.3